With Build 10051 you can schedule daily backups & use Music files from Phone & OneDrive for Alarm tones.

Some more Windows 10 for Phones Build 10051 interesting tidbits that we found while using it on a daily basis. You can read all our Build 10051 coverage by clicking here.

Updated Backup settings:

Daily backups can be scheduled with Build 10051. App data and System settings have separate toggles now.

Alarm sounds settings:

Alarm sounds can be now directly set with music files from Phone and even OneDrive. Only issue is not all file types are supported yet again.

Read the full Windows 10 for Phones coverage at our dedicated page. Let us know if you have found any unknown Build 10051 features yourself.