It seems that some services (especially update delivery)
don’t run flawless today. If you tried to update your iOS
or Apple tvOS to a newer version you might have found
yourself left with an error message that the update failed.

The exact reason for the update problems is not yet known but also iMessage, Apple Music and iCloud seem to have some problems with connection and processing data in the backend. As always, Apple is already in progress solving the issues but some Apple Knowledge carriers already said that especially the update problem might last a little while longer as there’s a problem with the update signing certificate.

All in all there’s no need to worry as the latest patch is closing only some minor issues.