I suppose it's too much to hope for that Oracle re-opens Solaris.
Getcher open-source fork of Solaris here: http://wiki.illumos.org/display/illumos/illumos+Home
It's been around for a while, initially started by some of the people flooding out of Sun in the immediate wake of the Oracle acquisition, in a (very slightly) less messy version of the Hudson/Jenkins split.
Would you mind pointing me at the Solaris kernel source code? Directly, please, and not a leaked version of it.
It's not Solaris -- it's illumos and has been for a long time. And the source code is available on GitHub.[1]