Hot Hardware published a review on the Intel Core i9-7900X And Core i7-7740X CPU: Skylake X and Kaby Lake X Debut

A quote from the article:

Over the next few months, Intel will be releasing an array of new high-end desktop processors in the recently-announced Core X Series, based on the Skylake X and Kaby Lake X micro-architectures. The first chips in the series to arrive in the lab are the 10-core Core i9-7900X and quad-core Core i7-7740X. We?ve got an array of benchmarks and platform details on tap for the processors, including some overclocking data as well.

The Core i9-7900X will be the first of the high-end chips to arrive and it will supplant the 10-core Core i7-6950X at the top of Intel's desktop processor line-up...

 Intel Core i9-7900X And Core i7-7740X CPU Review: Skylake X and Kaby Lake X Debut @ HotHardware