From Blizzard:

I wish to first thank the Warlock community for their patience in waiting for updates. We realize the process to facilitate information in areas related to future updates, specifically pertaining to classes, can take some time. With that being said, I'm pleased to bring to light a few tidbits of information.

Source is here.

Fixes include improvements to spell and firestones, dispels and purges will no long work on "enslave demon", and other bugs removed.