If you're on the developer channel you'll continue to be on the developer channel. That is, eventually a stable 4.0 release will happen, but because you're on t

If you're on the developer channel you'll continue to be on the developer channel. That is, eventually a stable 4.0 release will happen, but because you're on the dev channel you'll be updated to an unstable 5.X beta. At least that's how it is on Windows.