New leaks suggest that the 4.5 W Kaby Lake Y series will have Core m3/i5/i7 SKUs instead of the expected Core m3/m5/m7 SKUs.
http://www.notebookcheck.net/Intel-Kaby-Lake-may-be-dropping-the-Core-m5-m7-name.168704.0.html
What a great idea! Renaming m5/m7 to i5/i7 will instantly bring their performance up to "i"-level! That type of things is exactly what make Intel the industry leader!