Late last month, a retail listing showed a FlingSmash bundle with the then unrevealed Wii RemotePlus. That controller is real and so is the bundle.
https://kotaku.com/report-there-is-a-new-wii-remote-5646836
According to an official Nintendo release, the bundle will go on sale November 7. It’s priced at US$49.99.
The game was originally supposed to be out this past summer. The onboard MotionPlus addition seems to be the reason for the delay.