Next Windows 10 upgrade due March 2017

Microsoft will issue its next Windows 10 upgrade in March 2017, according to clues uncovered by digital detectives.
Tero Alhonen and a Twitter user identified as WalkingCat sussed the likely release timetable from a group policy in the latest Insider preview. According to a screenshot posted by Alhonen, Windows 10 version 1703 will be required for the policy.
Microsoft designates Windows 10 versions with a year+month label. In that convention, 1703 would represent March 2017. Previous versions