Since Hub 2.0 has gone live, we've gotten a constant stream of new users on the Unity community having issues getting started with Unity. When asking what version they use, the answer is usually "well, the latest" and then after asking again turns out they are on the latest Unity alpha. This happens because Hub 2.x always suggests you to install the bleeding edge alpha version first, so new users will just pick it instead of the stable one. Do note that Hub doesn't even warn about this and that new users can't possibly know what the postfix a or b mean on the version number. I hope Unity will fix this ASAP. For example possible solutions are: have a setting to show experimental editor releases / nonrelease versions and have it disabled by default. Or just list them on the same place but put a different category on them + don't select them by default. I'd prefer the first suggestion myself.