I'm personally wondering if Macci had anything to do with this decision.
Maybe a few words of wisdom like " The Phenom needs to attract enthusiasts, and right now it cannot compete without an unlocked multi, due to issues with early revisions of boards/bios and CPU's, at least give them SOMETHING to look forward to.... remember the early days, those unlocked CPU's sold"
Just a thought.... maybe I'm wrong, but I doubt anyone knows that platform better than macci, I'd bet on that.