Canon released firmware v2.0.3 for the 7D recently. Go here to find it. It fixes some things broken by the 2.0 update.
The 2.0 firmware enables a bunch of new features. Here is the canon site explaining everything. My favorite options are the higher burst rate, higher max iso, and the manual audio levels.
Oh, and while you’re at it – check out Magic lantern on the 7D. It’s finally making some progress!!