Classic Controller Pro mysteriously on display at Nintendo E3 booth

At the reception desk at Nintendo's E3 booth, among stacks of Nintendo brand licensing catalogs (full of your favorite things with pictures of Nintendo stuff on it), two Classic Controller Pros were displayed in cylindrical plastic cases. Nintendo didn't actually make any announcements about a North American release for the upgraded controller, but then it didn't make any announcements about a bunch of games that are coming out either.

We asked several reps at the Nintendo booth, and none knew if there was an actual release planned. There's nothing on the E3 press site either. The controllers were just ... there. Those controllers are totally coming out, though. Why else would they be there?