Microsoft has rolled out a new Windows 10 Mobile cumulative build for all supported Windows Phones whether Insider or not.
The update is likely a security update to address the Spectre and Meltdown issue, with Microsoft saying:
- This build includes all the improvements from KB4056891.
- Security updates to Internet Explorer, Microsoft Scripting Engine, Microsoft Edge, Windows Graphics, Windows Kernel, Windows Subsystem for Linux, and the Windows SMB Server.
The news answers the question of whether Microsoft will be patching Windows 10 Mobile users against the new processor flaws. You can download the new update from settings > Update and Security on your Windows 10 Phone.