Yesterday, March 2, Microsoft released the Windows 10 Insider Preview Build 17112 for Windows Insiders via a blog addressing them. This build brings fixes of more than 10 issues that include general changes, improvements and PC fixes.
One most important note regarding the build is that Windows Mixed Reality may not work. To keep it working, the build maybe paused via settings. You can as well choose to wait for the next preview build that should bring improvements on this. The low frame rate of 8-10fps and multiple crashes at startup may seem like the major obstacles of Windows Mixed Reality properly working.
Also, the Microsoft Store is likely to be either entirely broken or disappeared altogether when you upgrade to this preview build. Microsoft has a forum post that tells you how to get the Store back. The announcement blog lists several other changes that the build has brought.
Stay with us for the next update regarding Windows 10 or Microsoft as it surfaces.