So Bryan Cantrill (CTO) and all the former Sun eng. will abandon SmartOS @ Joyent?
They continue to port code to Illumos (i.e. KVM, continued work on Pluribus port of bhyve, etc.).
SmartOS is what their data centre orchestration solution gets built on-top of.
You can see their changelog for SmartOS they are quite active: https://us-east.manta.joyent.com/Joyent_Dev/public/SmartOS/s...
Development of SmartOS and Triton Datacentre occur under their joyent organisation on GitHub.