I'm not sure how long it will take Apple but I doubt it's a priority. I still can't get the TrackPad to work under a fresh install of Win8. (Other boot camp drivers I can install manually).
I thought Win8 had some trackpad gestures built in. Not for Apple I guess.
It runs great via Parallels 8 for me. Not sure if and how it runs via Bootcamp. I don't like rebooting any time I need to use Windows... Like for work every day.
I'm currently running Windows 8 Pro on my iMac 2011 through bootcamp, so far everything seems to be working perfectly with the exception of full brightness..
Hopefully we see proper drivers from Apple for Windows 8 soon..
if you install all drivers under windows 7 then upgrade (not clean install) the drivers will tranfer and you wil be able to use all gestures, at least for me it worked. although my windows 8 kept getting the POOL error and would keep making me restart..