The new Umihara Kawase game teased earlier this week is titled Umihara Kawase BaZooKa!! (title tentative) and will launch for PlayStation 4, Switch, and PC via Steam in summer 2020, publisher Success Corporation announced at Tokyo Game Show 2019. It will support Japanese, English, and Chinese language options.
Umihara Kawase BaZooKa!! is a “rubbering battle action” game with support for up to four players in online multiplayer. There is also a stage clear-style cooperative element. It will feature original playable characters in addition to Success and Studio Saizensen characters from games like Umihara Kawase Fresh!, Sayonara Umihara Kawase, Doki Doki Poyacchio, and Cotton.
Thanks, @success_g3 and @anohitoHRS.