According to a cover story by Nintendo Power, Sega’s Shinobi franchise is being revived. The cover also suggests that Sonic Generations is coming to 3DS.
Adding credibility to the story is a recently spotted mention of a Shinobi 3DS game from Griptonite Games. The developer has mostly done ports of titles to portable systems like DS, PSP and iOS, but they also created Assassin’s Creed: Bloodlines for the PSP.
Source: Kotaku