Metroid: Other M was discussed by Reggie Fils-Aime in an interview this week, clarifying the project title and a possible release window.
The latest adventure for bounty hunter Samus is being co-developed with Team Ninja (Ninja Gaiden, Dead or Alive) to fill in the gap between Super Metroid and Fusion. With Ninja involved, some had wondered whether it would be a darker/more mature take on the series - however Fils-Aime has ushered fans to not read to much into things before official announcements.
Big Metroid surprise. We've been holding this one very close to the vest to make sure that the surprise would be there. Not only the game itself looks fabulous but also this collaboration with Team Ninja, which has been very fruitful, very great work together. Not necessarily [M-rated]. At this point, it is very early, we said it's a title that's going to come out in 2010. Really, Project M is our internal terminology for the collaboration for what's being done. Don't read into it as to what the ESRB will be.
Thanks to GoNintendo.