Pokemon Sun and Pokemon Moon were announced on Pokemon Day 2016 right at midnight in Japan to celebrate the 20th anniversary. The actual reveal of these games did not come until May 10, 2016. Now onto Pokemon 2019 titles. These have been announced since E3 2017. Hopefully you see the similarity that we are lacking a reveal not an announcement. Now I'm not saying that it won't come before May but I am saying that to believe it will is a fool's mistake.