The following blurb comes from Kazumasa Iwao of Game Freak, which was shared in the most recent issue of Famitsu.
“Happy New Year. In 2017 we were able to release Pokemon Ultra Sun & Ultra Moon, and we express our deep gratitude to everyone who has been playing it. In 2018 we will still continue to hype up Pokemon, so please look forward to it.”
I have no idea what Mr. Iwao means by "hype up", but it certainly sounds like Pokemon fans should get excited!