It has not been updated; if there are different versions of a package in the xChange app store, you'll see radio buttons on the page giving you the options.
The SSO was a demonstration project of sorts for the scripting and packaging tools, to give developers a working example in the early days of the technology - and as such it's no longer something we're spending any time on. If anyone in the community would like to pick up the SSO and run with it, you certainly have our blessing.
