Earlier today, Microsoft released Windows 10 Mobile build 10572 to Windows Insiders to Windows Insiders on Fast Ring. The latest build brings lots of new features and improvements.
Now Microsoft is rolling out Fast configuration update to Windows Insiders on Windows 10 Mobile Build 10575.
You will receive this update if you are enrolled
A new “Insider Fast Configuration update” is rolling out to Windows Insiders on Windows 10 Mobile Build 10549. You will receive this update if you are enrolled to “Insider Fast” or commonly known as Fast Ring in your Windows Insider app. So open your Windows Insider app and enroll to
As per Gabe Aul, this update makes Microsoft target your device in correct ring. One must install this update, in case one has changed Fast to Slow or Slow to Fast rings at some point in time.
@embioeng It's a configuration pkg that allows us to target your device in the
If you have already installed Build 10136 then time to go and check for a new update. Don't get too excited though, as this doesn't look like any new Windows 10 Mobile build.
It is named as "Insider Fast Configuration update". I received this update on my Lumia 640 XL and