Teracube 2e (2021) is “emerald” according to the documentation. If I apply this here …
… then the latest available OTA updates (not builds offered for download to install manually) for emerald seem to be
stable: e-1.2-r-20220725206059-stable-emerald.zip
dev: e-1.3-r-20220824212931-dev-emerald.zip
You can see clearly whether you are on the dev or stable release channel in Settings - About phone - Android version (tap on it) - /e/OS version.
The build number in your screenshot matches the latest 1.2 emerald stable OTA update… new stable versions coming some time later than dev versions would be the intention behind them … https://doc.e.foundation/build-status