Hmm, thought they ship firmware for all recent models at once, though might be mistaken. Are there any fw bugs?
You can see the last release for Starlite Mk IV is from 2024: https://fwupd.org/lvfs/search?value=starlite
These seem to be the SKUs they are building roms for: https://github.com/StarLabsLtd/firmware/tree/capsules/roms