You are picking them up at the resort? My understanding is it'll be more like Feb 2 check in dates when you pick them up at the resort when you start to get 2.0 bands. You'll be getting a 1.0 band but you never know it might be the first day they hand out 2.0s.
the shape and the new ones have a removable icon in the center which is the part that makes them work so you can buy accessories (not on sale yet) to change it into a keychain or similar. functionally they are the same and nothing to worry about if you get a 1.0, some prefer the shape of the 1.0 better.