Sure you watched the keynote, but you didn't get to see the afternoon session in which Apple unveiled a few details about OS X 10.6, or Snow Leopard. Fortunately, theilife.com was there:
What started as a rumor, then revealed at the WWDC Keynote: the next iteration of Mac OS X, version 10.6 will indeed be called Snow Leopard. Snow Leopard will “..build on the incredible success of OS X Leopard..” by “..focusing primarily on new features, Snow Leopard will enhance the performance of OS X”. Rumors say that this means no PowerPC support, and could possibly mark the end of existence for Carbon UI.
Apple says that by optimizing the new OS X for multi-core processors and tapping into the potential of graphic processing units (GPU) OS X become faster and more reliable and allow more vast amounts of RAM. Additionally, Snow Leopard will ship with Microsoft Exchange support out of the box and features QuickTime X, a “new, modern media platform”.
For the full story, plus pictures from the event, click here.