Since it isn't official until 4/22/22 it is still listed as development version from the command line you can force an early upgrade by:
$ sudo apt update
$ sudo apt upgrade
$ sudo apt dist-upgrade
(All this does is make sure you are 100% up to date)
Next:
$ sudo apt autoremove
(This removes unused packages)
Then install update manager core ( you might have it already):
$ sudo apt install update-manager-core
( Install cli update manager)
Then run it with the -d argument:
$ sudo do-release-upgrade -d
(Runs upgrade manager forcing it to look at development builds)
Now just sit back and install jammy