I would be extremely surprised if Pokemon came out this year. I think holiday 2019 is the most likely release time for Pokemon. The last thing they want to do is rush their first console pokemon on a super hot system. It's gonna be a big upgrade for the series and they need to get it right.
As the dude said, both AAA third party games and more first party games will be hitting late this year, really from a first party perspective one other major franchise and maybe one or second tier game would be enough considering that apparently several AAA third party games are coming as well. Third party games I'm guessing will be a couple huge old ports and a couple huge new multi-plat games. Overall this would make a very strong second half of the year.