Milestone Creator Dwayne McDuffie has Died (CBR).
I'm a huge fan of the Milestone books, as well as McDuffie's Marvel comics (Deathlok, FF) and animation work (Static Shock, Justice League Unlimited, Ben 10: Ultimate Alien). I often read his message board, linked in the sidebar, where he patiently answers detailed questions from young "Ben 10" fans. His adaptation of "All-Star Superman" comes out on DVD today, and he approved new series of "Static" and "Xombi" coming from DC later this year. I was planning to review "All-Star Superman" anyway, so I'll probably have more to say then, but for now I'm blown away.
Edited to add: DC's official statement is here, and CBR is collecting memories from McDuffie's colleagues here.