Our friends at Droid-Life have confirmed what we’ve been told all along, the Droid Razr and the Droid Razr Maxx are 100% the same aside from that gigantic battery in the Droid Razr Maxx and the thickness it brings.
As you can see from the image above the software within the original Droid Razr and the Droid Razr Maxx is identical. Even the software version is the same.
What does this mean? It means that when an update rolls out for the Droid Razr it should be available for the Droid Razr Maxx as well. It also means that the root methods, custom ROMs and everything else should be the same.