Well, it is a prototype. Hopefully if this works well we'll see full-sized modules soon. It's the obvious way to get large amounts of living space into a small spacecraft payload bay.

The article says that Genesis 1 and Genesis 2 are still operational; but the wikipedia pages for them contradict this. It looks like they've both suffered avionics failure and are just dead carcasses. (As expected. They both lasted well beyond their design lifetime.) It says they're going to decay and reorbit within a decade, but I'm a bit surprised they didn't have deorbit systems.

Incidentally, if you web search for "genesis 1" you get some really non-spacecraft-related results...