Also during Apple's WWDC keynote, Steve Jobs previewed Mac OS X 10.5 (Leopard). Among the features demonstrated were: - 64 bit application support extended throughought the User Interface layer of the OS, allowing "full" 64-bit application development and deployment. - Time Machine, automatic backup and restoring of files corrupted or accidentally deleted or overwritten by the user. - Spaces, Apple's implementation of virtual desktops. - Core Animation - Enhancements to Dashboard, Spotlight, Mail, iCal and Universal Access - Boot Camp, and "next generation" Front Row, and Photo Booth bundled Apple plan to release Leopard in "Spring 2007." More information can be found at Apple's Leopard Sneak Peek pages.