By the incredibly limited amount of information I've read, it sounds like a general platform to manage key aspects of your life in a less formal way than the majority of apps and programs do. Think about health/education apps on your phone, integrated with a home console.
Taking health as an example (the easy one considering Wii Fit), I would guess they'd integrate your current devices (e.g. smartphone) to measure your general day to day activity and movement. You'd get home and startup the Wii U which would have all that fitness data accessible. Then you could attach the much forgotten "vitality sensor" to measure your vitals whilst you play some fitness games. Collate all the data and introduce new levels based on what needs improving, but keeping it light hearted "fun".
Could probably do the same for education, taking brain training to a whole new level, lol.
Anyway, all just speculation, and the 'non-wearables' thing is rather confusing unless they mean to surgically implant chips that integrate your day to day life with Nintendo software and games. Imagine playing Mario and jumping on virtual koombas on your commute to work... actually...