Update Now: OS X
The first Mac OS X update is (almost) here... Apple's Mac OS X site notes the following:
Use the Software Update feature in your System Preferences to get the latest Mac OS X software.
Improvements including better support for 3rd party USB devices, Classic compatibility and overall application stability as well as support for the popular open source Secure Shell service. For Japanese users, an update to the Epson printer drivers is also available.
Unfortunately, it's currently mis-linked, and the OS X software update doesn't bring it down.