If you haven't seen any of the beta versions, you're going to be pleasantly surprised with the work they've done for the next version. The user interface has been revamped - making it easier to use and at the same time more powerful than ever before.
Check out this post on the Forefront Server Security Blog for more information on the upcoming RC for FSE.
Thomas W Shinder, M.D., MCSE
Sr. Consultant / Technical Writer