Since so many of you folks are writing up, I want to put up something on record too
My hunch is that they would make it 'C' in september and then retro. That way, they get 4 years + of visibility again.
Another reasoning i have is the political environment we are in right now (lots of talks all around regarding skilled immigration; bills coming up; looked up as bipartisan issue etc etc....)
This is quite similar environment we had in 2007. We all know that chances of some bill passing is like 1 in a decade , but if something comes up, USCIS/DOS need to be ready to face the storm anyway.
Anti-Immis. who oppose all immigrant bills could also influence this... by making it current, all get 485s and shut up about immigration

Third, they have already streamlined 485 filing (all apps filed to TX center etc.. etc..) which helps them.
Ultimately, as all of us know, its just a guesswork.
Good luck to all of you here...
I wish all of you guys who filed 485 already, get GCs soon; and others get a chance to file 485