Microsoft has apparently started working on its next major Windows update, Redstone. The codename comes from the Minecraft game. The update is expected to be coming in two phases - the first in June 2016 followed by another one in October.

BuildFeed that keeps track of all Windows builds has detected a new build from the RS1 (Redstone) branch. Microsoft had already been in the planning phase for Redstone, according to earlier rumours. However, what is interesting is that it has now entered the early stage of development, with Microsoft's engineers working to lay down the code, confirms WinBeta.

The first Redstone builds have been compiled within 11xxx range that gives Microsoft enough space to finalise Threshold 2, a non-patch update for Windows 10 that is likely to arrive sometime in November, although it was originally scheduled for an October release. The Redstone builds might be compiled under branches starting with RS1_, like the Threshold 2 (TH2_).

Details about Redstone have already surfaced on a few occasions. Like all other Windows releases, Windows Insiders will first get access to the Redstone updates before it sees a public release. Redstone incorporating new functionalities might come with Windows version 11 or 12, instead of the same Windows 10.