I don't act like anything other than someone who hasn't seen any evidence to back-up claims of future releases. Go is the only thing Nintendo's releasing as of now. STOP over-thinking this.
Alright guy, here's something pulled from Serebii (posted last week) : "In an interview with the Yomiuri Shimbun newspaper, the launch roll-out for Pokémon GO has been revealed. In this interview, Tsunekazu Ishihara, head of the Pokémon Company, says that the app will rollout in Japan, Europe and North America first and then launch in South America, Asia, Africa and the Middle East. No date has been revealed as of yet. In this interview, Mr. Ishihara also stated that they are working on another big project away from Pokémon GO."
So there is a claim for a "future release" aside GO itself, and why would they provide more coverage on a Smartphone game and not a game for their own system? I think you're just on the GO Hype Train and are not thinking straight.