More details released via the 1UP developer interview on how the swinging mechanic will work  (It's going to be hard to do initially... so they say), and on the link between the 3D game and the XBLA remake. Having the arcade game will unlock some areas, skins, and weapons in the 3D one. Sounds kinda cool.... especially since the XBLA version is already well on my "must get" list.