The first, Pro Applications Update 2009-01, contains several updates for applications in Final Cut Studio. This update includes Final Cut Pro 7.0.1, Motion 4.0.1, Soundtrack Pro 3.0.1, Color 1.5.1, and Compressor 3.5.1.
This update addresses general compatibility issues, improves overall stability, and addresses a number of other minor issues.
You can download this update through Software Update, or on the Apple Support Downloads page.
Also, Apple released Apple Server Diagnostics 3X106, which replaces Apple Server Diagnostics 3X104 to provide support for Snow Leopard Server. This is compatiable with the Xserve (Early 2008 or Early 2009) or the Mac mini server config (Early 2009).
This download is also available on the Apple Support Downloads page.