Famitsu is reporting that Tecmo?s Ninja Gaiden will hit Japanese players on April 27th. The Xbox port, Ninja Gaiden Sigma, will support updated resolution and graphics. It will also feature new character and the mission to accompany the new character. The demo will feature all new mission that will not be included in the final version of the game. Also, demo will feature numerous weapons that will be included in the final version. When will the demo be available for everyone else? Tecmo hasn?t made concrete announcement for the release of the demo outside of Japan at this time.

Source