I can prove that Bulldozer will work in AM3 sockets

[FlanK3r]

Because a lot of us own AM3 boards already and don't want to spend another $250 for a board?

hm, whats better for you as overclocker? Better performance with new board or lower performance with older boards? For me its first. I like AMD and still Im hope for better days, when we will see better average performance at AMD side.
Maybe for one year ago AMD said, they have solved lower performance and AM3 socket or better performance and TDP with new socket. Think, the choice was right-better TDP and higher performance. Long time compatibility from AM2 socket was OK, but nothing will can be forever.