Apple has one more update for Snow Leopard coming.
Apple today release Final Cut Pro X. In a support document discovered by MacRumors, Apple strongly recommends Final Cut Pro X users to update to OS X 10.6.8. This OS X update though not available yet, but has been released to developers for testing already.
What Apple is fixing in 10.6.8 is unclear. Final Cut Pro X is supposed to run fine for the first customers on OS X 10.7. But maybe there is some nasty hidden bug that shows after some extensive use. It is likely the last Snow Leopard update before the OS X 10.7 Lion release next month.