New CG lineart of the MS-14G Gelgoog is linked to from Gunota (from Gamewatch's new article for new Bonds of the Battlefield update)....slightly more official than the current Mark Simmons artwork we have up now...
EDIT: Thanks for getting that up, swordoath... also, I stumbled across the official Evolve 9's page, which has art for the 3 Zetas (Red, Grey, and White)...they are pretty small, but it might be usable?
http://www.gundam-evolve.net/story/ev09.html
EDIT2: The page for Evolve 7 list the number for the OZ version Virgo II as OZ-03MD, not 02, while the Evolve 15 page has a redesigned Braw Bro, Gundam, and possibly White Base as well... again, to small to use as is, but maybe they could be fixed up?