Hey All!  Quick tidbit:  There is a revised book for exchange 2007 for the MCTS exchange 2007 Class.  It also talks about the new features with SP1.  And guess what?  It has the Virtual server images where Exchange 2007 is on Server 2008.

I just hope the exam (70-236) is the same as I feel the exam might change slightly because of the new questions on sp1.  We shall have to wait and see, but I will be certain to let you all know as soon as I do!