I saw this video last night, and I must say, I was thoroughly impressed. I've never been much of a Metroid fan, and depending on how I enjoy the demo, I may go ahead and pick this title up. What surprised me the most was just how fast it is, and when a game is moving that fast with all the action, it's easy for someone like me not to worry about the graphics in detail.
But the multiplayer is only going to be 4 players? Any other word on whether they'll be multiplayer missions, co-op, or anything else? That's my only problem buying this if it's multiplayer... I don't just want an arena game without any other fun packed in. That is, if the word about training based single player missions is true.