I asked Thaadd Powell(Customer Service) a year or so ago if they would do art books for Lord of the Rings like they have for Lovecraft and A Game of Thrones. She said that boardgames (Middle-Earth Quest etc.) don't provide enough hi-res art for them to do this. But the LCGs (A Game of Thrones and Call of Cthulhu) do.
So, now that they have an LOTR LCG I am looking forward to the eventual "Art of..." volumes!