The 15w versions of the i5-7200u & i7-7500 have already launched, correct me if i am wrong but mba usually use a bit clocked down variants of those two cpus.
http://ark.intel.com/products/95443/Intel-Core-i5-7200U-Processor-3M-Cache-up-to-3_10-GHz
http://ark.intel.com/products/95451/Intel-Core-i7-7500U-Processor-4M-Cache-up-to-3_50-GHz-
"launched" ... I don't think Intel knows what that really means to the rest of the world. According to them the 45W Skylakes w/ 580 Pro were 'launched' in Q1 of this year. Show me ONE manufacturer selling a laptop with that CPU.