OS X 10.6.8 Update Soon?
With Final Cut Pro X, Compressor, and Motion announced this morning, a new support document states that upgrading to Mac OS X 10.6.8 is highly recommend for users running any of the new software. Mac OS X 10.6.8 isn’t publicly available, although it has been released to developers for testing.
Updating to Mac OS X v10.6.8 or later is strongly recommended when using Final Cut Pro X, Motion 5, or Compressor 4.
Even though the support document states that upgrading to 10.6.8 is highly recommended it works fine in 10.6.7.