Updates like this won’t hit everyone today of course. Expect it to take a couple of days or even weeks before all device see it available. Be sure you have a good charge o your battery and Wi-Fi is usually always recommended. You can attempt to ping the server for the update by heading to your devices Settings > About Phone > System Updates. No promises that it will pop up right away though.
While it is downloading feel free to check out the entire change log from Motorola. It outlines everything that is coming in the update for you. Some things might be more exciting for you than to others.
Via Droid-Life