Are you running dev or stable? Here’s how to check … [HOWTO] Give complete /e/OS version info easily for support, answers, comparison etc.
(Your info suggests dev according to the download pages, but please make sure for clarity.)
If dev, upgrades to new major Android versions would have to be done by you manually …
https://doc.e.foundation/devices/GS290
If stable, an upgrade should be on offer via the updater to get from Android 10 to Android 11, and the question would be why it isn’t …
… and the upgrade from Android 11 to Android 12 would be under testing …