Windows 10 Mobile Anniversary Update is now available
The Windows 10 Anniversary Update for mobile doesn't pack as big of a punch as its desktop counterpart, but still introduces а series of refinements that mobile users will definitely enjoy. Among the changes are a revamped and more customizable Quick Settings menu, notification syncing between desktop and mobile, a universal Skype app and more. Have a look at the complete Windows 10 Mobile Anniversary Update changelog for more granular information on what will change.
If you haven't received a notification for the update, you can perform a manual check for it by going to Settings > Update & security > Phone update > Check for updates. If the update is available for you, it will be downloaded and installed in a convenient time (you can manually set when).
source: Microsoft via SlashGear