In Windows 7 , 3d support will work, please do not forget it is not now even RC, it is Beta2
Beta1, actually. Next release will be RC. But, Windows 7 is really not different from Vista, and so should "just work", since Vista is supported already. It's not like Microsoft changed the driver model, basic OS fundamentals, etc.
That said...
I amend my previous comment: while turning of 3D support
seemed to fix problems with Win 7 under Parallels, it turns out that was just coincidence. I continue to see OS hangs and application start-up issues while running under Parallels.
Three particular examples:
Adobe Photoshop Elements 3.0, starting from the Elements control panel, the Organizer fails to start. At this point, attempting to reboot causes an error dialog (saying that the Organizer failed to start correctly) and then the Elements control panel to be redisplayed. No other application can be started, and rebooting won't work (you have to stop the VM).
This is very reproducible...happens 80-90% of the time.
During one session where I did manage to get the Organizer running, I later tried to view a JPEG file in the built-in Windows image viewer, and that completely locked up the system.
Also, trying to run any of the built-in games (Minesweeper, Purble Place, Spider Solitaire, etc.) causes an immediate hang of the system.
None of these issues happen, ever, when running under Boot Camp.
So, I amend my request for 3D support to broaden it for simply having Windows 7 support that works.