Ubuntu 21.04 was released on 22 April 2021 with a load of new features. Wayland is now default. Your home folder is now private by default. There is a recovery key for encrypted installs and it comes with the Linux 5.11 kernel and Python 3.9. You can download it https://ubuntu.com/#download. There are also links to the Ubuntu flavors on that page. Remember that Hirsute Hippo is only supported for 9 months (January 2021) so if you are looking for a LTS release either stick with 20.04 or wait for the release of Ubuntu 22.04 (April 2022). By the way the release date for the next Ubuntu version (Ubuntu 21.10, Impish Indri) is 14 October 2021.