Leaked images revealing the Black Legions new Artifact and Warlord Traits are out thanks to Captain Citadel. You can check everyone of them out, as he has access to the digital version of the newest codex supplement Black Legion that is up for pre-orders this weekend!
Here are some images, and of course a link to where you can see all of them.
Check all of them out on the Spikey Bits forums
http://forum.spikeybits.com/showthread.php?20775-Chaos-Space-Marines-Rumor-Roundup&p=239447&viewfull=1#post239447
http://forum.spikeybits.com/showthread.php?20775-Chaos-Space-Marines-Rumor-Roundup&p=239522&viewfull=1#post239522