I think I am in agreement with most other people.
The dates will definitely (in my mind) move beyond the Jan 2008 date mentioned by CO to at least somewhere in late-ish 2008.
How much they move beyond that is down to the performance of EB1 and EB2-ROW for the remainder of the FY. Currently, EB1 approval rates appear high and EB2-ROW approval rates appear quite low. Both can change in the second half of the year.
I can't honestly say I see dates moving beyond March 2009 even in the most optimistic scenario. Currently, I don't even see that as very likely, as all the news lately has been negative to the number of visas that might be available.