IGN asked Tecmo Koei for confirmation and received the following response:
"Tecmo Koei has not formally announced Ninja Gaiden 3: Razor’s Edge for additional platforms, but we will share more information when available."If something is in the works, expect to hear about more on Ninja Gaiden 3's re-release on IGN in the near future.
Source: Rakuten via AllGamesBeta Mitch Dyer is an Associate Editor at IGN. He’s also quite Canadian. Read his ramblings on Twitter and follow him on IGN.