Finally! Blizzard shared some information about the upcoming profession changes in Cataclysm:

While the Cataclysm updates to many of the professions are still deep in development, we wanted to share some of the work that's been going on, as well as a high-level look at any lessons learned or changes to their underlying philosophies during the design process. Please be aware that not all professions have the same extent of information available right now, but each is receiving the same love and attention as the next.

Take heed of these teasers as you look forward to your new rank of Illustrious Grand Master!

Please enjoy!

General

• Perks will continue to exist across all professions, and will upgraded appropriately.

A few profession related quotes from Blizzcon 2009.

Archaeology
Archaeology is the new secondary profession that will be joining the ranks of cooking, fishing, and first aid in World of Warcraft: Cataclysm. Archaeology allows the player to unlock new abilities and rewards by discovering ancient treasures throughout the world. Each archaeologist uses the profession to uncover clues hidden in the world around them, such as troll relics or map fragments, and decipher their meaning, enabling the clever archaeologist to manipulate pieces of the past, learning the location of a treasure cache or valuable artifact. Such artifacts are highly sought after by the Archaeology Society, and they pay in gold and items for their return. Those who have mastered archaeology can find Titan artifacts, earning special currency used to unlock character paths and allowing the player to further customize their character.

Reforging

• Reforging is another way to customize your gear.
• It will be relatively cheap, you will need a Blacksmith / Leatherworker / Tailor / Jewelcrafter / Engineer to do it. Each profession get to reforge a type of items.
• It lets you reduce one stat for another. Some restrictions will apply, you can't put the extra stat on something that is already on the item.

Professions

• Multi-gains will be added, while you level up your trade skills, rare items will give you more points as you skill up. (Rare items will give you 5 points for example, while green bracers will only give one
• Gathering should be a little more fun.
• Engineering is a very fun tradeskill, but it's either amazing or it sucks and everybody drops it. More convenient items like Jeeves or Wormhole Generator will be added to the profession in the future to get back to the roots of Engineering.
• Fishing will also have some big changes, no details yet but it's going to be more fun.

Patch 3.2 goes live this week, or it's live already in the USA. I updated the guides as always. Please send me an e-mail if you find something that I missed. You can find my contact info at the bottom right corner of this page.

Click here if you want to read the full patch notes.

Most of the guides are now updated for patch 3.1. I play in EU, so I can only check the changes tomorrow, when the patch goes live here. Well, there won't be much left I think, I got most of the changes from the PTR. I am curious about some change with the leveling process of cooking, there are some new recipes and they said 400-450 will be easier, I didn't have time to actually level cooking when PTR was online, so I am going to do it tomorrow.

Patch 3.1.0 is now available on the PTR downloader. Below you can find the list of changes related to professions.

March 14, 2009 - The post is updated with all of the latest changes.

Alchemy

• Blackmouth Oil and Fire Oil no longer require a vial.
• Increased the health granted by the Flask of Stoneblood.
• The Mercurial Stone is no longer required as a tool for alchemists. It is instead a green quality bind-on-equip trinket.
• Elixir of Greater Spellpower now grants spell power to all schools of magic.
• The Crazy Alchemist Potion is now correctly increased by Alchemist Stones.
• You can now sometimes find Alchemist's Caches from bosses in Ulduar. Only players with an Alchemy skill of 425 or higher can loot these secret caches.

Blacksmithing

• Most of the recipes in the 1-300 skill range of blacksmithing have had their stats updated to be more useful.
• Added a new recipe for the Titansteel Spellblade.
• Titanium Plating now reduces the duration of disarm effects by 50% as well as increasing your block value.
• Added a new recipe for the Titansteel Spellblade, an epic one-handed caster dagger, available from trainers.
• Added new recipes for epic gear, found rarely on Ulduar bosses. These recipes are unbound and can be traded.

Cooking

• Grub now sells the Dig Rat Stew recipe to players who completed the quest.
• Prospector Khazgorm, found in Bael Modan in southern Barrens, now sells the recipe for Dig Rat Stew to the Alliance.
• A new recipe has been added to cooking trainers for making Black Jelly, using several Borean Man 'O War as ingredients. While it looks disgusting, it restores more health and mana than the highest level food.
• Flint and Tinder is no longer necessary for creating a campfire. You're just that resourceful!
• Ingredients such as Spices, Apples, and the like have been removed from most cooking recipes.
• Players no longer need to complete the Clamlette Surprise quest to gain Artisan cooking. The quest now offers the unique recipe, Clamlette Magnifique. If you already completed the quest, you can visit Dirge Quickcleave in Gadgetzan to learn this recipe (for free).
• Several Northrend recipes were given greater skill up ranges to make it easier to reach 450 cooking skill.
• You no longer need to learn cooking from books. The trainers have finally done their reading and are able to teach you the same thing.

Enchanting

• Added a recipe for enchanting staves with spell power.
• Greatly increased the drop rate of recipes found in pre-Lich King dungeons and raids.
• Several recipes in the 250-300 skill range have been rebalanced, and the reagent requirements have been reduced.
• Some enchants now have level restrictions. Note: the enchant is never removed from the item to which it's applied, however, the player no longer receives its benefit until they reach the required level. Any enchants modified in this way have had their tooltips updated.
• The enchanting interface now correctly sorts grey recipes by skill difficulty.

Engineering

• Added a new Reticulated Armor Webbing engineering enchant that increases the armor on plate gloves.
• Added a new Springy Arachnoweave engineering enchant that grants passive spell power in addition to turning your cloak into a parachute.
• Flexweave Underlay now grants passive agility in addition to its normal effect.
• Nitro Boosts now grant passive critical strike rating in addition to their speed boost.
• Nitro Boosts now make you drop PVP flags when used, as well as preventing you from picking them up while the effect is active.

Fishing

• A new (and very rare) special mount can now be caught from Northrend fishing pools.
• A new clam, the Giant Darkwater Clam, can be obtained by fishing in Wintergrasp. This mighty clam has a greatly increased chance to drop pearls, and yields up to five times the regular amount of clam meat.
• New fishing dailies are now offered from Marcia Chase in Dalaran City!
• Players are no longer required to do the Nat Pagle, Angler Extreme quest to gain Artisan fishing. The quest now offers a special superior-quality fishing pole instead. If you already completed the quest, you can visit Nat Pagle in Dustwallow Marsh to receive this new fishing pole.
• The time needed to catch fish has been reduced.
• You can now fish anywhere, regardless of skill. Every catch has the potential for fishing skill gains, but you are likely to catch worthless junk in areas that are too difficult for your skill.
• You can now fish in Wintergrasp, and the fishin' is good!
• You no longer need to learn fishing from books. The trainers have finally done their reading and are able to teach you the same thing.

Gathering Skills

• Toughness, Master of Anatomy, and Lifeblood now have level requirements equal to the level required for the corresponding skill rank: Apprentice (1), Journeyman (1), Expert (10), Artisan (25), Master (40), Grand Master (55).
• You can no longer fail when Mining, Herbing, and Skinning.

Inscription

• Added a recipe to trainers for creating a level 70 superior-quality off-hand item.
• Added a recipe for creating a different level 70 superior-quality off-hand item. Scribes will find the recipe is dropped from residents of Silverbrook.
• Added around 50 new glyph recipes. These new recipes can be obtained from Books of Glyph Mastery found as world drops on Northrend monsters. Reading a Book of Glyph Mastery randomly discovers one of the newly-added recipes.
• Glyph icons have been updated so it is easy to distinguish between classes.
• Players will now learn 3 recipes the very first time they perform Northrend Inscription Research. This does not apply to players who have already discovered recipes from Northrend Inscription Research (sorry).

Herbalism

• Find Herbs no longer tracks Glowcaps.
• Northrend herbs now yield more herbs on average.
• The herbalism requirement for gathering Tiger Lily has been reduced to 375.
• The time it takes to gather herbs has been reduced.

Jewelcrafting

• Added a new recipe to cut black diamonds.
• Added a recipe for Shifting Twilight Opal to the daily jewelcrafting vendor.
• Added recipes for superior-quality PVP rings and necklaces to Northrend jewelcrafting trainers.

Leatherworking

• Shadowskin Gloves and Dusky Boots no longer require Shadowcat Hide to create, but instead require an equal quantity of Shadow Silk. Shadowcat Hides can no longer be obtained from skinning.
• Added a recipe for combining Borean Leather Scraps into Borean Leather. You can still use Borean Scraps from your inventory to combine them.
• Added new recipes for epic gear, found rarely on Ulduar bosses. These recipes are unbound and can be traded.
• Several lower-level items crafted by leatherworkers have received major changes to make them more appealing.

Mining

• Northrend deposits now despawn 1 minute after mining them. This change was made to speed up respawning when nodes were partially looted.

Tailoring

• Added new recipes for epic gear, found rarely on Ulduar bosses. These recipes are unbound and can be traded.
• Added recipes for superior-quality PVP cloaks to Northrend tailoring trainers.
• The Lightweave tailoring enchant now sometimes grants a temporary spell power bonus instead of dealing direct damage to your target.
• Several lower-level items crafted by tailors have received major changes to make them more appealing.

I almost finished updating the guides on the site, now there is only Herbalism and Skinning left and the secondary professions. I did not make a post about it, but the other primary professions are finished. Go and check them out:

• Alchemy Guide
• Inscription Guide - I corrected a lot of errors and made some changes.
• Jewelcrafting Guide - Revamped some of the pre-WotLK part.
• Leatherworking Guide
• Mining Guide

There will be a LOT of changes with the new 3.0.8 patch. Too bad there is not many new recipes, and the new ones can be learned at max skill level, so there won't be much change in the leveling process. However, there might be some undocumented changes with the skill ranges. Please post comments or send an e-mail if you found something that changed on the PTR and it's not on this list.

If you look at the Blacksmithing section, they mention "Increased the materials required to make several recipes that require cobalt." I didn't check it out on PTR yet, I am currently downloading the client, but I assume it will be [Reinforced Cobalt Chestpiece].
UPDATE - It's the Reinforced items. MMO-champion confirmed it.

PTR 3.0.8 Notes update - Professions

Alchemy

• All flasks no longer require an alchemy lab to create.
• The Cooldown on Transmute: Titanium has been reduced to 1 day, and the materials required have been simplified.
• Reduced the cooldown on Northrend Alchemy Research from 7 days to 3 days.
• The chance to discover a Northrend transmutation has been increased.
• Changed the Crazy Alchemist Potion so it always gives health and mana. It also grants the benefit of another random potion effect.
• Potion of Nightmares functionality changed. You can now move to interrupt the effect, and damage taken is no longer increased while you are under the effects of this potion.
• Added a new recipe for Ethereal Oil to grand master alchemy trainers.
• You can now discover a recipe for the Elixir of Water Walking with Northrend Alchemy Research.

Blacksmithing

• Reduced the spell power on the Titansteel Guardian to bring it in line with its item level.
• Increased the material requirements to make high level frost resistance gear created with blacksmithing.
• Increased the materials required to make several recipes that require cobalt.
• Added a new recipe for shield reinforcements that increases the block value of shields.

Cooking

• A recipe has been added for Kungaloosh. You can learn this recipe from an NPC in the Dalaran sewers once you have completed the quest 'The Taste Test' in Sholazar Basin.
• A recipe for the incredible Fish Feast can now be purchased for Dalaran Cooking Awards.
• Succulent Orca Stew and Shoveltusk Soup have been removed from the requirements for any cooking achievements as they will not be added to the game.
• A new recipe for Worg Tartare is now available for purchase with Dalaran Cooking Awards. This delicacy imbues hit rating and Stamina upon those brave enough to eat it.

Enchanting

• Many high level enchantment recipes have had the amount of Infinite Dust and Greater Cosmic Essence requirements significantly reduced, but with Dream Shards being added to them.
• Increased the Fire damage inflicted by the Icebreaker weapon enchantment.
• Reduced the armor penalty granted by the Berserking weapon enchantment.
• Added a new recipe to enchant bracers with Stamina. You can buy this recipe from Vanessa Sellers in Dalaran.
• Added a new recipe to enchant a weapon with Stamina. You can buy this recipe from Vanessa Sellers in Dalaran.

Engineering

• Engineers may now be able to properly engineer Centrifuge Constructs.
• Reduced the cooldown and increased the duration of the effect for Hyperspeed Accelerators.
• Added a new recipe for epic plate spell power goggles.
• Weakness Spectralizers are now usable by druids.
• The Saronite Bomb recipe now creates a lot more bombs for the same material cost. While this breakthrough was discovered by goblins, all engineers can take advantage of it.
• Gnomish Lightning Generator has had its cast time and cooldown reduced.

Inscription

• Glyph of Deterrence: Now -10 seconds instead of -20.
• Glyph of Holy Light now affects friendly targets in a larger radius.
• Glyph of Horn of Winter now increases the duration by 60 sec.
• Jessica Sellers, a new vendor in the Dalaran inscription shop, will sell most inscription inks for the cost of one Ink of the Sea. She also sells Snowfall Ink for multiple Inks of the Sea.
• A new recipe for Glyph of Arcane Blast has been added to Master and Grand Master Inscription trainers.
• Glyph of Death Decay has been changed to grant 20% additional damage instead of its current effect.
• Glyph of Invisibility duration has been increased.

Jewelcrafting

• Added a new recipe to convert a frozen orb and some green quality gems into several superior quality gems.
• Reduced the spell power granted by the use effect of "Figurine - Twilight Serpent", but reduced the cooldown significantly.

Leatherworking

• The epic leg armor patches now require a Frozen Orb in addition to their other materials.

Mining

• Mining veins and deposits no longer require multiple hits to receive all the ore. Players will receive around the same amount of ore, stone, and gems they would have received from multiple hits.

Skinning

• Increased the critical strike rating granted by ranks 5 and 6 of Master of Anatomy.
• Carrion Fleshstrippers are now skinnable.

Tailoring

• Reduced the cloth required to make a Bolt of Imbued Frostweave.
• Simplified the materials required for Shining Spellthread and Azure Spellthread.
• Reduced the eternals required to make Brilliant Spellthread and Sapphire Spellthread, but increased the number of Iceweb Spider Silk.
• Greatly reduced the materials required to make the self-only tailoring leg enchants (Master's Spellthread and Sanctified Spellthread), but these recipes no longer grant any skill gains.
• Reduced the training cost for the normal Flying Carpet.
• Ebonweave now requires the tailor to be in the Maw of Neltharion in Dragonblight to create it.
• Spellweave now requires the tailor to be at the Azure Dragonshrine in Dragonblight to create it.

I already finished the Tailoring guide a couple of days ago, but I forgot to post it here. Go ahead and check it out. Enchanting guide is done aswell.

Enchanting leveling is a nightmare. It's the WORST profession to level so far, worse than Tailoring and by worst I mean the most expensive. I really do hope that Blizzard will add new recipes for every profession in the upcoming major content patch, because at the moment for most of the professions it's completly pointless to level it up past 440 or 445 - well it's not pointless if you want to be Realm First in any profession.

Leave a comment if you have better suggestion for Tailoring 425-450. Thanks!