Possible Theory for Penryn's 3 MB/6 MB Cache?

[Jacky]

i thought penryn is going to have 2*6mb of cache?
otherwise it would be a bad move from intel, because less cache prevents the cpu from scaling well, doesn't it?
and if they want good yields they can still make a 2*3mb version for the low end.
source

[Thorburn]

Penryn is believed to be the dual core replacement for Conroe, so that would be 6MB shared L2 cache as opposed to 4MB at present.
The interesting bit will be if Kentsfields replacement (Yorkfield?) will be a single die or a dual die implementation as at present, and if its a single die if its 2 x 6MB with each 6MB shared between two cores, or 12MB shared between all 4.