Yes, alot of the maps used for the screenshots were merely to give Soldat a more aesthetic feel. I'd bet people would be disappointed by this.
Oh, and the remaining two unidentified maps are VTT's TW_Rime and Viggoloniggolo's INF_Raibo, if I may recall.
Aww, i thought that new maps had this new look.. is demonstrated that map editors have great potentials with multi-texture and alpha PNG. But effectively, the photos in the site was sort of "easter egg" because them are not included in the game. And i tought that the "all map reworked" said in the change log, had the meaning of this new amazing graphic. But the real changes are very difficult to see...
Sage.
The problem, I think, is that two of those maps support an unofficial gametype. Explore was a puzzle map. And VTT's Magica was constructed out of 2000 polygons. TWO THOUSAND. Probably even more. That, along with a few hundred sceneries, can cause major drops in framerate on older computers. So it couldn't qualify as a default map.
INF_Raibo could have been a default map.