I think I'm going to hop on this. I loved Bionic Commando and it looks like they really added in a lot of cool things to go above and beyond just bringing you an upgraded game.
Also, can anyone tell me the song playing in the trailer for the game (on Steam)? It's kind of unique.
edit: Apparently, the music is all custom and you can buy a twelve track album via iTunes of Bionic Commander Rearmed. The artist named is Simon Viklund.