Microsoft is having a rather big update day as Windows 10 Mobile build 10586.29 is also now going out to nearly all new Lumia 950s and Lumia 950 XLs including the Lumia 950 on AT&T.

Yesterday saw this same build go out those on the Insider program, but today's release is a general one for what looks like all new phones sold with Windows 10 Mobile build 10586.

As confirmed in our forums, users are getting the update even though they are not enrolled in the Insider program marking this as the first test of Microsoft's Windows as a Service (WaaS) model.

Matching this update for Mobile is today's cumulative update for the desktop. That OS refresh also brings those PCs up to 10586.29 making this one of the first times both PC and phone get the same update on the same day.

AT&T too