https://doc.e.foundation/devices - emerald - Install doc - Command line, which for emerald will give you the choice to install current or prior dev or stable releases, whichever you prefer (or whichever you are running now, if you want to stick with it).
Dev and stable are explained at https://doc.e.foundation/build-status, and visible in the complete /e/OS version string ([HOWTO] Give complete /e/OS version info easily for support, answers, comparison etc).