[IMGW]http://media.1up.com/media?id=3238228[/IMGW]Tomonobu Itagaki's teased about an in-development Nintendo DS videogame several times -- but most people probably didn't anticipate it would be Ninja Gaiden-related. NeoGAF's obtained the latest issue of Famitsu Weekly, where Tecmo and Itagaki jointly unveiled Ninja Gaiden: Dragon Sword.

There are precious few details on the touch screen-centric take on the traditionally skill-based series, but the first screen shots show promise, as Ninja Gaiden: Dragon Sword is not a side-scroller, but a 3D, overheard action game that will reportedly be mostly controlled through the stylus. We'll have to wait for more specifics.

Additionally, NeoGAF also reports more ninja goodness in only a few weeks, with a Ninja Gaiden Sigma demo appearing on the PlayStation Network on April 27th -- in Japan. Chances are an American demo is in the works, as well, but we don't have a specific date yet. The demo will contain content different from the final game, and will even feature online leaderboards for players to compete online with.

Thanks to 1UP.com for sharing the news with us!