The retiring list is up. Check out my SU! demo site for the link.
I also want to let you know that if you are interested in any wheels to buy them right away as once they run out of them they're gone. If there are any you are interested in let me know. I can tell you if they're going fast or gone.
UPDATE: All retiring wheels are now available. SU! has released an announcement that states the wheel vendor will continue to produce wheels until the end of June.