I am running Windows Vista and Office 2007 and did not encounter any issues at all when synching with my 8700g. I'm using a BES and sync wirelessly, so I haven't had to deal with the bluetooth issues mentioned earlier. I know that most driver updates should be rolling in soon, so I recommend that you keep checking the website of your device manufacturer for the new drivers to be released. It shouldn't be too much longer.
Overall though, I'm having a great experience with it.