Those whispers were right on the money: as you can see from the new Wii accessory's packaging, MotionPlus will ship not as an elegant little add-on, but as a cumbersome rubber straitjacket.
Yes, Nintendo needed to get a "new" jacket out there for insurance/legal reasons. And yes, like the old jacket, we're sure MotionPlus just pops right out. But still.
Hopefully this is just a temporary stop-gap, and Nintendo start shipping a new Wii Remote with this technology built-in.
[via Go Nintendo]