I've just read about OmniOS. Cool, it seems in the nearest future we'll have as much Illumos-based distros as Linux-based ones :)
I really hope that OmniTI guys will collaborate with illumos and illumos-userland teams in productive way. By the way, I really like OmniTI group - they develop and support my favorite DBMS and one of my favorite server operating systems :) The only thing which is frightening me is possible fragmentation. IMHO, without big developers community it is vital to be as much united as possible and try to be friendly to beginner users and developers.