Planet Gamecube's got the press release
Look at the list of people working on this game. Konami's Kojima. Nintendo's Miyamoto. Silicon Knights. Wow. Hopefully they'll do it the same way as Capcom did Resident Evil for the Gamecube and change a bunch of stuff around, make it almost a new game.
This is great news for me because I think MGS1 is 10 times the game MGS2 is, at least plot-wise, and I lost my copy of MGS1. All I can say is *please* include a shitload of VR missions, those are the best.