Motorola reminds us of a few Jelly Bean features like expanded notifications, Google Now, and voice search at their announcement page, but there's also plenty under the hood that makes Jelly Bean an incredible upgrade for any phone or tablet. Project Butter anyone?
As mentioned, the update is coming in phases. To check if it's your turn to have a crack at it, go to the settings and look for a system update. If you see one, holler in the comments and let us know how it's working out!