Previously we saw the quad-core Yorkfield having 4 cores / 4 threads and Wolfdale having 2 cores / 2 threads. Now Intel done some changes to the Penryn architecture and added in HT which obviously isn't too hard to implement.
Intel sneakily planned out some last minute attacks on AMD K8L architecture to further boost Penryn performance.
We have told you Bloomfield is capable of 8 threads and that Yorkfield will come with 2x6MB L2 cache, two variants of Wolfdale with 3MB/6MB L2 cache.
Of course there is another Wolfdale-L with 1MB L2 cache. Yorkfield will arrive in Q4 2007 while Wolfdale will come in Q1 2008.