There are some more images out now from Captain Citadel out that reveal the cover of the new Space Marine codex, the new SM Detachment, and details covering the new Devastator box set. Definitely worth checking these out.
via Captain Citadel on the Bols Lounge
http://www.lounge.belloflostsouls.net/showthread.php?55396-New-Space-Marine-Codex-Rumor-Roundup&p=497298&viewfull=1#post497298