MacRumors.com

According to reports, Apple has already provided an update to their Mac OS X 10.5 Leopard Preview that was distributed to developers at WWDC 2006. The update which is available through Leopard's Software Update provides few details on the improvements provided:

This Software Update delivers improved reliability and compatibility for Mac OS X Leopard Developer Preview and is recommended for all users.

The 46.4MB release is simply entitled "Leopard Developer Preview Update 1.0" and updates Build 9A241 to Build 9A241e. No obvious improvements have been noted.

Apple demonstrated Mac OS X 10.5 Leopard at WWDC, revealing some of the features that are expected. Mac OS X 10.5 is not expected to be released until Spring of 2007.