I'm pretty sure Pokemon releases this year and not next year.
To be fair there will probably be one this year, next year and every year. There hasn't been a yearly gap since 2015.
I just realised Animal Crossing actually still releases this fiscal year, just at the tale end of it. But it hasn't been since 2017 that Nintendo had one of their major 1st party titles release in the first half of the year.
I'll need to see the line-up before I guess about 2020. Switch still hasn't received a price cut after all or a hardware revision so who knows very possible.