Hope it's ribbon girl, but I still think it will be Spring Man, wouldn't make that much sense otherwise. I can see Spring Man and Ribbon Girl as a costume.
I don't think it will be a "lame" character as some say, but it's still weird that they are finally releasing an ARMS character just now, it's been a while since they have abandoned the game. It's a bummer cuz the game is really damn good. It's not about gimmicks, you can have fun with motion controls if you want cuz it's fluid enough and playable, but playing it with a regular controller is better and the game is still technical. It's just that I think that vsf players don't really like things that are TOO different + the marketing that emphasized too much on the motion controls, even forcing the motion controls in some tournaments, which wasn't a great idea imo.
Anyway, it's a great game