At its own Japanese expo in August, the Pokemon Company put together a retrospective video that very much seemed to tease a Wii U fighting game. In an interview with Nintendo Life last month, Pokemon X and Y Director Junichi Masuda said the video was "showing the history of Pokemon games as well as the future. It was kind of a concept about what the future of Pokemon may look like."
As for NHK's show, that's set to air in a few weeks time on October 28. Meanwhile, 3DS entries X and Y arrive worldwide on Saturday, October 12.
Update: The Pokemon Company says there is "no news to report at this time."