As of right now, the 40th Anniversary Special for "The Price is Right" will be taped on August 20th at 8:30 AM. Originally, that was the taping for the Thanksgiving '12 episode & it's possible this could be the aired 41st season premiere, as well.
Elsewhere, a teachers episode will tape on Jul. 30th at 12:20 PM, the Veteran's Day '12 taping has been rescheduled for Sept. 6th at noon & the Halloween '12 episode is currently scheduled to tape Sept. 24th at 8:30 AM.
Source: On-Camera Audiences.com