it’s pretty hard to tell what openindiana does. seems like they develop Hipster but what is that? there wasn’t any clear info after spending a few minutes on the site.
The article linked was simply a short list of patch notes, but if you navigate the site it has available information.
Edit: I'm wrong. It is an Open Source version of Sun/Solaris.
But no it isn’t. It’s more of a Solaris fork ( which I used to run)