Both versions of Motorola Moto G said to be receiving Android 5.0.124
One lucky second generation Motorola Moto G owner says that Android 5.0.1 came as software version 22.21.25, with build number LXB22.46-25. The OG Motorola Moto G is said to be receiving software version 220.21.25, with build number LXB22.46-25.
If you own either model, remember that these updates are sent out on a staggered basis. You might receive it today, tomorrow, the next day or even a few days later. Stay calm and collected. You can attempt to manually check for the update by going to Settings >About phone >System updates > Check for updates.