The box-art was removed and Nintendo told Shacknews it had "nothing to announce at this time," when asked for comment. The Wii Remote Plus will presumably be bundled with FlingSmash, which releases on November 7.
"For the convenience of the users, Nintendo is developing Wii Remote Plus, which integrates Wii Remote and Wii MotionPlus," said Nintendo president Satoru Iwata (via IGN). "We will announce the details of this controller on our web sites and through other media at some later date."
Sorry, Nyko. Good idea, though.