Certainly, you've all been reading about DP4 and the details from WWDC. We won't bore you by reiterating those details here... but if you haven't, read through Apple's MacOS X page as well as viewing the new quicktimes of MacOS X.
WWDC is still going on... while most of the major announcements have likely been made, the hardware demo is scheduled for today. Stay tuned...
Meanwhile, Go2Mac teases it's readers with a scanned image of a DP4 CD. :)
For the most detailed information about the first day of WWDC, see Stepwise's coverage of WWDC.