If you subscribe, i.e.: click the bell and select either “watching” which will give you all updates or “Watching first post”, to the “Update Log” category, you’ll get notifications when new Firmware is released.
https://forum.yaeltex.com/c/v2-custom-controllers/update-log
(I think if you set to Watching/First Post you’ll also get an Email?! Preferences are a bit non specific)