The development of OpenIndiana is focused on therolling-release distribution.
While previous development releases (/dev) were produced by a release engineering from a different software consolidations, a unified build 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 have links to the active source repositories as well as old (/dev) consolidation repositories.
Latest news and history of updates
How to join the development of OI hipster
Packaging with the unified build system