Here's an article on the current emulators available for S60 3rd Edition devices, both finished, in beta and in alpha:
http://www.allaboutsymbian.com/features/item/Emulators_on_Symbian_S60_3rd_Edition_devices.php
I'm most keen to see the vSUN beta completed, it could do with the speed boost that 3rd Edition devices can offer.