A week or so ago, Catalyst Game Labs brought the licenses to the art for the Unseen mechs(ie: Warhammer, Battlemaster, Locust, Archer, etc) back:
http://catalystgamelabs.com/2009/06/24/catalyst-game-labs-brings-back-unseen/

Not sure if this will affect the video games cause that could be a different clause altogether or not even in it.