It's official

Mac OS X 10.5 Leopard on Intel-based Macintosh computers is certified UNIX according to the Open Group's Unix 03 standard.

WWDC '07

I'm looking forward to WWDC this year. I think all the Leopard features they've announced so far are cool (particularly DTrace), but I hope the "top secret" Leopard features are even cooler; I really want some super-slick new eye candy. Although, at this point, I'm WAY more excited for the iPhone :-)