Rise of Azshara Patch 8.2 goes live on June 25. / 26. (US/EU). The new patch offers a lot of new recipes and items to craft or gather.

General Changes

• All Battle for Azeroth professions (except Archaeology) now have a maximum skill of 175 instead of 150. Every old recipe will be gray after 150, so you can only use the new ones to level your profession up to 175.
• Players can now gain the first 25 skill points in each profession by disenchanting, milling, or prospecting items from the respective expansion. These are not guaranteed skill points, but still, it will be a bit cheaper to level up these professions.

In the upcoming 8.1.5 update on March 12, players can take part in unique quest lines for the Alchemy, Blacksmithing, Enchanting, Engineering, Inscription, Jewelcrafting, Leatherworking, and Tailoring professions to earn a new Tool of the Trade that complements their craft.

Patch 8.1 Tides of Vengence goes live on December 11. / 12. (US/EU).

General Changes

• Darkmoon Faire quest-based skillups now apply automatically to the most recent expansion profession progress that is not at its maximum.
• Professions-related World Quests now have a chance to reward Expulsom.
• Herbalism World Quests now have a chance to reward Anchor Weed.

The Battle for Azeroth Pre-Patch goes live July 17th/18th. (US/EU)

Patch 8.0.1 will contain the BfA profession skill squish I mentioned in my Battle for Azeroth Profession Overview. I made this post to make things more clear what will happen to your professions.