The dates are on the official web site under the special events for May
Dates: May 19, 2006 - June 11, 2006, 9:00AM - 10:00PM
No other info yet as to who will be there.
FYI, They just flimed for the extreme makeover home edition right by the tree tonight 11/6/05 both Paul and Paige where on set. Its going to air Dec. 11th