Just started production for release before the end of the year.
I hadn't seen that they've begun actual production, but I'll bet you one of those chips that they won't be released before the end of the year, at least not on the consumer side. Not enough pressure from AMD for them to need to. 45nm Lynnfields just went on sale last week, they don't need to compete against themselves.
The P55 chipset was supposed to be out around the end of '08/beginning of '09, too, and they just came out last with with the aforementioned Lynnfields.