OK - I couldn't wait to see the faster 3D performance... and guess what? It crashes, all the time.
I ran 3DMark2001 and 3DMark2003 in Parallels 6, and wanted to test them both in 7 to see the difference. Neither finishes without crashing, and they crash in different places each time. The crash takes down the entire OS as well as OS X and requires a hard reboot.
Running Lion 10.7.1 with a 2010 MBP, 2.66ghz i7, 8GB RAM (4 for VM), GT330M and 512GB SSD.