Microsoft is taking the unusual step and releasing a late night (for those in the US) cumulative OS update for Windows 10 for the PC



From Windows Central:

Cumulative update KB3194496 is now live for those on the Insider Release Preview ring (and likely Slow as well). Microsoft posted the changelog for the update and we're reposting it below.

The changelog applies to both Windows 10 build 14393.222 for PC and Windows 10 Mobile build 14393.221 released earlier this week.

  Microsoft releases Windows 10 build 14393.222 for Insider Release Preview