Metroid: other M is officially releasing August 31st, 2010 in North America.
This game takes place chronologically right after Super Metroid for Super Nintendo Entertainment System (SNES). At the start of the game, you are shown a cut scene of the battle that took place with mother brain at the end of Super Metroid. This game is more involved in the story than the previous games, and will delve into Samus's character.
As far as the gameplay goes, most of the game takes place in third person mode, while holding the Wii mote vertically. By pointing the Wii mote at the screen you may enter first person mode, during this mode you're unable to move around. This game require's frequent switching between third person and first person mode. This game also introduces a new Melee combat system, for close up combat.