For anyone who doesn't know, Metal Gear Rising is a new sub series in the Metal Gear series. While the game does in fact take place after Metal Gear Solid 4, it is a series of its own with its own style of gameplay. While the Metal Gear Solid games are stealth based action games, Metal Gear Rising is actually a "lightning" fast action game instead. Based around crazy sword play, quick reflexes, and combos. Although Rising isn't the Metal Gear Solid game many fans were expecting, it is still a unique game on its own, and a game you action fans should really check out!
Until then, why not check out one of the trailers?