Rumors are circulating that Oracle is ending Solaris development at Solaris 11.4 with no major releases to follow. A tip on TheLayoff.com says in part:
Solaris being canned, at least 50% of teams to be RIF'd in short term
All hands meetings being cancelled on orders from legal to prevent news from spreading.
Hardware teams being told to cease development.
There will be no Solaris 12, final release will be 11.4.
As of writing, Oracle has yet to make any announcements concerning the future of Solaris.
I guess we'll see soon enough, Solaris under Oracle's control hasn't been too vibrant nor has it been as interesting to open-source enthusiasts since they put an end to OpenSolaris following their acquisition of Sun Microsystems. If they are indeed ending Solaris, we can only hope that they decide to open-source it fully again and/or dump the code onto Illumos. And wishful thinking they'd re-license ZFS to a GPL-compatible license and invest more in Oracle Linux...