Website overclockers.ua spotted that in the SiSift Sandra database a new entry was found, that entry would be a Core i7 7900X, the new Skylake-X that is to be paired with an X299 motherboard. 

Interestingly enough the processor is still tagged as Core i7, but that might just be a database thing as we do expect Core i9 branding. Anyway, the detail reveal a Core i7 / i9 7900X processor. This one would be 10-core based. The interesting thing however are the high clock frequencies. 

The tested Core i7-7900X has ten Hyper-Threading cores running, these are listed at a 4.0 and 4.5 GHz turbo clock. We assume that will be normal Turbo Boost 2.0 and and Turbo Boost 3.0 modes. Turbo boost 3.0 simple means that say two threads can run at a high frequency, others at al lower one. Boost 2.0 would be say four cores at 4.0 GHz, and so on. Other specs show an L2 1MB Cache and 13.75 MB of shared L3 cache. The TDP of this processor is listed at a very high 175 W. 

Specs on Core i9 7900X (Skylake-X) - It'll get a High Turbo Boost Clock