Windows 10 Mobile build 15031 is now available in the Fast ring – here’s what’s new February 9, 2017 by admin Tweet After releasing the build for PCs yesterday, Microsoft is now offering Windows 10 Mobile Insider Preview build 15031 to the Fast ring, with only one new front-facing feature. Read more… Neowin Related Posts:Windows 11 Insider Preview Build 22621.575 and Build…Windows 11 Insider Dev Channel build 23619 adds a…ISOs for Windows Server Insider Preview build 25217…Windows 11 Insider Canary preview build 25905 adds…Windows 10 22H2 Release Preview Insider build…