Nightly would be the very latest, I think. That is, it's not like, say, Chrome release where it's Dev -> Beta -> Stable. It is (was?) more like Nightly -> Dev

Nightly would be the very latest, I think. That is, it's not like, say, Chrome release where it's Dev -> Beta -> Stable. It is (was?) more like Nightly -> Dev -> Beta/Stable.