Is it innovative? Probably not. However, it does offer unique and different experiences that hasn't been done on other platforms. I see local multiplayer being huge having seen Nintendoland. Nintendo at the least gets that software with a strong multiplayer foundation is where the moneys at ie wii sports, mario kart, NSMBW, SSB, etc. They're not being new or innovative but I think the experience will be different from other platforms available. The system itself was very market conscious in terms of development. Its got software that appealed to the Wii crowd such as Nintendoland, NSMBU, SING, JD4, Wii Fit as well as wiimotes. Nintendo fan crowd is covered with NSMBU, Pikmin 3, Legos and Rayman. 360/PS3 gamers with ZombiU, Bayo 2, a bunch of ports and 360/PS3 controller functionality built in. Social/Cell phone gamers with tablet design and social networking.
Obviously it remains to be seen whether they will actually succeed with this and some aspects definetly seem weak. In particular trying to win the 360/PS3 and iPad crowd. However, their vision and development of Wii U makes sense and seems like an appropriate response to the current market. Execution on the other hand remains to be seen.