When Microsoft released Windows 10 aka Threshold, there were ongoing rumors about Windows Redstone which is expected to arrive next year in two waves same like Windows 10 TH1 and TH2 this year.
Some time ago we reported that Microsoft has started the development of Windows Redstone. The next major update (Windows Redstone) for Windows 10, which is expected to bring lots features and improvements like extension support for Microsoft Edge, though it is in very early phase of development.
Now, in early December a Microsoft Employee was talking to Windows Support in Twitter and he claims that his devices is Currently running on internal RS1 build 11065. However yesterday well known leaker also hinted a build similar to the above one, in a tweet Core just said “1XXX3 and he did not provided any other information.
— Core (@tfwboredom) December 10, 2015
It seems that there may be many parallel builds in testing, so we can not confirm which build is heading to Insiders. However the company could release a Redstone build to Insiders in upcoming weeks.
Thanks Nicholas for the tip !! Cheers !