Was Ninja Gaiden 2 just a full demo for the xbox 360?

From SouthSideGamer: "Everyone knows that Tecmo has recently announced a sequel to the ps3 exclusive Ninja Gaiden sigma, coming this fall, which is a remake of the first ninja gaiden game on the original xbox. They have said that this will not be a direct port of the xbox 360 version, Ninja Gaiden 2. The features will include an enhanced version of the game with better visuals, Co-op, new characters, fixed camera angle issues, a refined gameplay experience. This does sound exciting for the ps3 fans who have been waiting for more Ninja gaiden sigma games but what about the players on the xbox 360? Will they get some of the updates to fix these issues?"