Motorola’s first generation Moto G now is receiving over-the-air updates to Android Lollipop.
As with all devices that are updated to 5.1, Material Design and the notifications system seen in 5.0 are present here with some improvements. One of these is the new interruptions and downtime settings. This allows for priority-only interruptions during the times and days you like, and you can customize which reminders, events, calls, and events are prioritized. In addition, it will be integrated into Motorola Assist to allow for easy filtering.
Notifications for the update are going out now. If you do not see one, then head over to Settings, “About Phone,” then, “System updates,” and select “Yes, I’m in” in order to download the update for installation.
Source: Motorola’s Global Portal site via David Schuster