While a Wiimote with built in Motion Plus has been rumored for awhile, we haven’t heard much recently. But now, at this point, it seems pretty much confirmed with a GameStop listing for Nintendo’s Fling Smash.
Fling Smash isn’t exactly on everyone’s radar, especially after the explosion of returning franchises at E3. Nintendo probably knows this, hence why they seem to be bundling the title with the long rumored Wii Remote with built in Motion Plus under the name Wii Remote Plus.
GameStop has since removed the listing for the bundle. So while not 100% confirmed, you can probably expect it at this point.