Well what is quite new is that its being done in the Specialist Games campaign books. I know GW proper does that, mix old art with new in many books, but with forgeworld Black Books you did get new art. I dont know if Siege of Chtonia used quite a bit of older art, I actually dont think it did ( the complaint there was that there wasnt enough art, but not the re-use of older stuff). Still, this Beta Garmon book also does have a lot of new art so that is pleasing.
Thats not a good sign for my enjoyment of the book PC, as I have seen your opinions on campaign books often match mine. Maybe they should have picked a different conflict to focus on after already doing AT: Titandeath and Great Slaughter supplements?