Another source confirms Hyper Threading in Penryn!

Perhaps the most interesting thing about these two processors is the return of Hyper-Threading. This, however, does not mean that Yorkfield will appear as eight logical cores, nor does it mean Wolfdale will appear as four logical cores. Intel's internal guidance on the subject specifically claims the processor will ship with Hyper-Threading, but will only utilize 4 threads. On every Intel roadmap in the past, Hyper-Threading doubles the amount of listed threads in the guidance documentation. Clearly, there is more of a mystery here still.

"The official company policy is that our engineers have left the door open for Hyper-Threading, but we cannot confirm or deny any future plans for the technology," adds Intel Public Relations Manager Dan Snyder.