The development of OpenIndiana is focused almost exclusively on the Hipster rolling-release distribution.
While previous developments development releases (/dev) were produced by a Release Engineering release engineering from a different software consolidations, these have been superseded by a unified build system system oi-userland, is used now to build Openindiana hipster (/hipster), as explained on Building with oi-userland and Github page oi-userland .
The instructions for Building the Operating System contain have links to our the active source repositories as well as legacy old (/dev) consolidation repositories.
Latest news and history of updates
How to join the development of HipsterOI hipster
Packaging with the unified build system