Team Ninja's official Twitter was updated today with notice of a release time frame for Ninja Gaiden 3. The PS3 and 360 sequel will be released in March.
If you recall hearing a February time frame for the game a couple of weeks back, that was actually in reference to PlayStation Vita's Ninja Gaiden Sigma.
In other Team Ninja news, Famitsu.com posted a bunch of screens of Dead or Alive 5. You can see them here.
DOA5 and Ninja Gaiden 3 were featured at a media event in San Francisco today. Ninja Gaiden 3 was playable in multiplayer. DOA5 made its playable debut, showcasing Ayane and Hitomi with new designs.