I just stepped into a game of Arathi Basin for the first time since Patch 2.2.2, and as soon as the loading screen popped, BAM! A disconnect. Just as been happening with almost every BG related loading screen since Patch 2.2 more than one week ago.
Apparently Brewfest was more important than getting game loading mechanics to work properly. So, expect a lot of drunken fun. But if you go to a BG, expect a D/C.