Teddy,
I agree with PWMB, I am not expecting any more than 500 PWMB cases from EB2I&C until 08MAR2007.
Since EB2I&C already reached MARCH2007, DOS/USCIS should move EB2I&C to at-least JULY/AUG 2007 in August 2011 bulletin itself, assuming that they will have another ~10k available.