Figured my first post in this forum could be useful and all, so...
Gaming blog Kotaku has recieved some concept art from the game. Here's a link:
[URL="http://kotaku.com/5415951/an-early-look-at-the-warhammer-40k-mmo/gallery/"]An Early Look At The Warhammer 40K MMO[/URL]
In my opinion the colouring is just somehow a bit odd and the Ultramarine looks a bit goofy, but all in all not bad.
The marine's expression reminds me of a bulldog.