Autoweek article
They claim there will be 3 versions of the Cayman
First there will be the 3.4L Cayman S with 295hp
Then comes a Club Sport version with 305hp and less weight (didn't say how much less) deleting A/C, sound deadening, and audio system
Last comes a less powerful and less expensive Cayman with a 3.2L engine
The Cayman S prototypes have already lapped the Ring in less time than the 997's 8m 15s.