I hope they manage to fix the issues currently affecting users running the game in OpenGL mode (most wine users.)
My wife and I are currently trying to beta test WotLK on our systems at home with wine, but many areas, upon entering, completely white out the screen. Running the game in Direct3D mode will fix the issue, but at a severe performance penalty. The parts of the game that do have working graphics seem to be quite buggy as well. I don't really think two months will be enough time to straigten out all the bugs, so it will be interesting to see how things proceed from here.