Today's Windows 10 Insider build 15031 release is another "PC only" build, but if you're wondering when we'll get a Windows 10 Mobile counterpart, it looks like we may not have to wait long, according to a tweet from Windows Insider PM Brandon LeBlanc:
New PC build for Windows Insiders in Fast today! Still hoping to get a Mobile build out later this week. https://t.co/50jOMLv9Bi
— Brandon LeBlanc (@brandonleblanc) February 8, 2017
Concurrent PC and mobile builds have gotten a little off track with the latest Insider builds, something the company was striving for earlier in the Windows Insider process, but luckily we're still getting mobile builds, and Microsoft continues to invest in the mobile OS.