Following the Ubuntu 20.10 (Groovy Gorilla) release, there will be Ubuntu 21.04, whose codename will start with the word Hirsute followed by an animal name, which will probably be voted by the community soon. If you want to give the Ubuntu developers some suggestions on the H animal, check out this Ubuntu Discourse topic. Until the codename is decided, development on Ubuntu 21.04 will kick off later this week on October 29th with the toolchain upload, based, of course, on the current release, Ubuntu 20.10. And, as its version number suggests, the final release will be expected in April (04) 2021.