NX is a platform. There will be an NX Console and an NX Handheld that run the same OS, and development environments will be the similar enough to easily port games between form factors, regardless of hardware performance (Iwata mentioned that hardware power won't be a problem). However, not EVERY game will be playable on ALL form factors. Maybe there will be more form factors, handhelds with different power specs, consoles with different power specs, a tablet maybe.
No, it won't be a handheld with a dock, where the "dock" will have "extra" horsepower to make games run at higher resolution on TV. The "dock" will bomb worse than Wii U.







