In August 2016, Microsoft announced its Windows support policy for Windows 7 and Windows 8.1, via their Windows Experience Blog. They have stated that they will support Windows 7 and Windows 8.1 Skylake-based systems included on a ‘supported list’ until the date which they mentioned on web page as follows.
This page is a list of Panasonic Skylake platforms that will be supported on Windows 7 and Windows 8.1 on this basis:
This information is frequently updated. (Last updated on : 3/17/2017)