I sure am hyped for this game. It keeps getting better and better. This trailer sure showed us a bit about Infinite and what bond he has with Eggman, at least a surface of it. I have picked some screencaps from it I thought are interesting.
This one shows us Eggman’s lab and here we can see a possible Infinite’s cubes or his actual body. When I look at it I’m getting the feeling Infinite may not just refer to endless power but to an endless amount of copies of himself. I mean if he is defeated (=killed) for good, in one of this tubes he is recreated with old memories, resulting in an evolution. I don’t think it will be this complex, but it sure seems interesting.