Update: Tecmo Koei Europe announced Xbox 360 and PS3 versions of Razor's Edge are headed to the continent on April 5. That suggests a North American release date of April 2, going by traditional worldwide schedules, but that's yet to be confirmed.
Ninja Gaiden 3: Razor's Edge, the improved Wii U version of the action game, will be ported to PS3 and Xbox 360, Siliconera reports based on a Famitsu leak. The ports also showed up on the database of Japanese retailer Rakuten, dated April 4.
Along with updated enemy AI and a reduced reliance on quick-time events, Razor's Edge also introduced new playable characters, including Ayane, Dragon Sword's Momiji and Dead or Alive's Kasumi. Ayane and Kasumi appear in Famitsu scans of the PS3/Xbox version, confirming their presence.