*snicker* I wouldn't hold my breath. Basically any commercial UNIX (With an emphasis on anything remotely based on System V) from the 80's is going to be confined to legal purgatory forever and ever and ever.
(Or at least until the associated copyrights have indisputably lapsed a century or so from now, depending on whether Congress decides to extend it *again*.)
Frankly I don't even trust OpenSolaris, and if *anyone* had sufficient rights to completely open-source a System V Unix it was Sun. (God rest their souls.) But even they had to negotiate with other rights holders and remove a few things from the open-sourced product to do it.