After a slight delay from the update for Windows 10, Windows 10 Mobile is also now receiving Cumulative Update 10586.545 . The update, like most other cumulative updates, doesn’t bring any new features and is all about improvements to the OS.
A specific changelog isn’t provided for Windows 10 Mobile at the moment but it is expected to be mostly the same as Windows 10’s PC version.
The update is available to all Windows 10 Mobile users running TH2 Build 10586.xxx (Not the Anniversary Update).
Get the update by opening Settings>Update & Security>Check For Updates.