The guys with the Grey Hoods not only made these maps but created an Encyclopedia containing all the fantasy words the writers came up with up to date (they could only reach F), the portray of the countries on Ynev's present (most of North Ynev was finished), gathered info on the two greatest wars of South Ynev (with some maps), and wrote a whole new supplementary reference guide for one of the Northern countries. The latter work was published with the title Enoszuke (Enosuke, it's Japan on Ynev) in 2002 and they meant it as a beginning volume of the Satralis - Geoframia Kivonatok (Satralis - Geoframia Compilations, Geoframia is a fictional work of some Ynevian dude, very typical method of the MAGUS franchise to write point-of-view stuff) series which, similarly to many other MAGUS plans, was never realized.
About the time of their operation the competing companies released several books among them the reference guide Geoframia (2003) which signaled there won't be any continuation for the Enoszuke volume. It contains many snippets of information but again it failed to give a unified picture and many content was known from previous works. Some snippets was entirely revolting or mind blowing for some people - depending on their views of the topic. Of course it's a useful stuff, now we know such things that the Satralis is the 4th planet in it's star system.
In 2004 came the MAGUS D20. Yes. They "modernized" the system with DnD's D20 Open Game License and not much else. Because that was the thing missing, ya know, nothing else... It was a failure. I think the resistance was too huge.