When I first read about the Play Version Manager I first thought it was some sort of tool for versioning.
When Play! Framework 2.1.0 came out, I finally realized that it was a tool for switching back and forth between various Play! Framework versions.
So download the Play Version Manager from github: https://github.com/kaiinkinen/pvm
You can do things like “pvm use 2.1.0” or “pvm use 2.0.4“.
Here are some of the supported commands:
$ pvm [tab][tab] alias copy-packages help list run uninstall version clear-cache deactivate install ls unalias use
So, download it, and give it a try.