Double-posting but they've updated with a ton of mecha designs for all the remaining teams/factions:
http://www.mjp-anime.jp/12mecha/index.html
Really varied designs, really colorful. I love it!
Edit: They updated the Artwork section too:
http://www.mjp-anime.jp/10gallery/index.html
Lots of new background artwork for a ton of locations. Yum!