I'm sorry for posting something serious in this section, but I found no place that seemed more appropriate.
Micro Focus acquired Attachmate in 2014, which had bought Novell in 2011. In 2010, Novell was found to own the copyright to UNIX during the SCO v. Novell lawsuit. Micro Focus apparently folded Novell into itself around late 2016. Thus, Micro Focus is the current owner of the UNIX copyright.
In 2002, Caldera International (later SCO Group) released “32-bit 32V UNIX” and “16 bit UNIX Versions 1, 2, 3, 4, 5, 6, 7” (none of which were initially released after 1979) under a 4-clause BSD license as open source. Going through the Asset Purchase Agreement on Groklaw, it is highly dubious that Caldera was allowed to license Ancient UNIX in the first place. Does Micro Focus recognize the Caldera License?
The license includes this text: “All advertising materials mentioning features or use of this software must display the following acknowledgment: This product includes software developed or owned by Caldera International, Inc.” Given that Novell was found to own the UNIX copyright, the advertising clause misrepresents the facts of UNIX copyright ownership. Additionally, the advertising clause makes the Ancient UNIX code unfortunately incompatible with the GNU GPL. Does Micro Focus have any intention of relinquishing the advertising clause?
Finally, it has been over a decade and a half since the open source release of those UNIX versions. There are still a number of historically important UNIX operating systems that are currently unobtainable under any kind of license. Does Micro Focus have any intention of making available source code licenses, under whichever terms, for UNIX System III (1982, 37 years ago), PWB/UNIX 2.0 (1981, 38 years ago) and PWB/UNIX 1.0 (1977, 42 years ago)?
UNIX turns 50 years old this year. It would be wonderful if these uncertainties could be clarified.