Microsoft is pushing out a cumulative OS update (KB3135173) for Windows 10 on PC. As we reported earlier, this is a standard 'Patch Tuesday' update with fixes and optimizations for the Windows 10 desktop operating system and is available to all users.
Those on the Windows Insider program are on the Redstone (RS1) branch and will likely see a different set of OS security fixes and improvements and will be brought up to the same level for patching.
Full story from the WindowsCentral blog...