Microsoft is making available a new Windows 10 "Redstone" preview build to its Fast Ring Insiders today, January 27.
Pay no attention to the huge jump in build numbers with this one. The most recent preview build was 11102; today's is 14251. As Windows Insider chief Gabe Aul explained, Microsoft is syncing its PC and mobile build numbers.
Additionally, Microsoft is "nearly ready" to start providing new preview builds for Windows 10 Mobile, Aul said. The first devices to get these will be phones that came preloaded with Windows 10 Mobile: The Lumia 950, 950XL and 550. Microsoft will "expand from there," Aul said, as Microsoft starts making Windows 10 Mobile available on certain existing Windows Phones.