If you're a Windows Insider who loves to test new features, you're going to have to wait a little while before any new features begin showing up in upcoming preview builds. Much like how Redstone 1 was developed, Microsoft has announced that they are focusing on under-the-hood changes first, adding new features later down the line.
This is the nature of development, so this shouldn't come as a surprise to Insiders. Upcoming preview builds from the Redstone 2 development branch will feature a lot of OneCore refactoring changes, and as such Microsoft warns these builds may be a little more buggy than usual. If you're not okay with this, you should switch to the Release Preview ring or leave the program entirely for now.
Not only that, but Microsoft will also be holding back Redstone 2 builds for Mobile at first, giving PC builds a head start for Insiders to test. Again, this is similar to what the company did with Redstone 1, so this shouldn't be all too surprising. Mobile preview builds for Redstone 2 will resume in a few weeks, but for now PC builds will be the focus.
From the Feedback Hub post:
Microsoft is now ready to start releasing Redstone 2 builds to Insiders on PC. As we reported recently, Microsoft could get the first Redstone 2 build out to Insiders as early as this week, which we're super excited for. Let us know below if you'll be testing Redstone 2 builds!
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