[kentiko]

You can find 21.04 here: https://www-ftp.lip6.fr/pub/linux/distributions/Ubuntu/relea...

[scaladev]

These are all beta images.

[walrus01]

If you install the beta from a week or two ago and then do a 'apt update' followed by 'apt dist-upgrade', it'll download maybe a few hundred MB of stuff, need to reboot once, and will be the same as the release.

[ASalazarMX]

Or you could wait a couple of hours for Ubuntu to update their website. What's the rush?

[vdfs]

Or just get the latest from https://releases.ubuntu.com/21.04/