We never doubted that there were engineering samples of the Kentsfield processor out there. They have already been briefly shown at Intel's booth during Computex 2006 and have also been floating around the company's partners. Of course, the information leaks couldn't be prevented completely and one of the Kentsfield based processors appeared in XtremeSystems.org forums.
Take a closer look at the marking of this engineering sample: Intel does specify the L2 cache size (8MB), while in fact the cache works as 2 x 4MB. This Kentsfield sample is none other but two Core 2 Duo E6600 (2.4GHz) cores combined in a single package, which explains the strange description on the CPU-Z screenshot:
The processor is based on B0 core stepping, but there is still at least half a year left before the launch, so the stepping may change more than once until then. As for the TDP value, there is no exact data about it yet, but Kentsfield processors work in the currently existing mainboards supporting Core 2 Extreme. The latter however require the mainboards to comply with 05A (TDP=95W) specification, although the actual TDP value for Core 2 Extreme X6800 (2.93GHz) doesn't exceed 75W. In this particular case Kentsfield worked in MSI 975X Platinum mainboard revision 2.08.
As you see, there are four actual cores in the system while there is only one CPU. Looks like we will very soon see not only the first Kentsfield benchmarks but also will be able to estimate its overclocking potential.