Razer blade uses kaby lake available now
While you are correct, the Kabylake processor that the Razer Blade uses is a low power 15W TDP chip. By nature this means that it is still slower than the range of 28W TDP Skylake processors the new 13" MacBook Pro family is receiving in this update. The 28W TDP variants of the Kabylake family is not yet available from Intel.
Sources: http://ark.intel.com/products/95443/Intel-Core-i5-7200U-Proc... http://ark.intel.com/products/91164/Intel-Core-i5-6287U-Proc...
Nonsense, 45W Skylake are from April-May, 45W Kaby is not expected until February-March.
edit: oh I just remembered they didn't use Iris Pro parts in the 15" so you are correct that these are 2015 parts. The corresponding KL parts still aren't out though.