I think it was that the Earl has a white form (human form),as well as the form that we normally see, just like the other noahs, because after all they did say at the beginning that road and the earl were the first born noahs...
I like the new noah he's cool, and i also like how they made it so that road was his adoptive daughter, I'm so glad Road and Tyki came back! <3
Also someone asked about the 14th, that was the noah that is somehow connected to Allen, the noah that tried to kill the earl and betrayed him by stranding the arc in Tokyo and making it so that only he could move it again. Therefore because Allen is somehow related to him, he was able to move it too, and thats how it got to the base. Though I really want to know what relation the 14th noah is to Allen, the noahs called him a 'tool' so i'm not sure if he's a decendant, reincarnation, slightly possessed by the 14th or something completely different...
Also i really want to know if mana was related to him too...and cross, the time that Alen died at the hands of Tyki, they were looking for descendants of 'him' but they didn't say who he was, so that makes me think Allen really is the descendant of the 14th, because Cross was a descendant of the man they were looking for too, and he seemed to know a lot about the 14th noah...but thats just my theories XD
sorry for the uber long comment XD