There are more leaked images floating around from yesterday originating from the Mexican Ork. There you can find out quite a bit of info, including special rules and Warlord Traits. Here are a few that are shown, and of course a link to check out the images.
Here is where the images can be found.
https://www.facebook.com/mexork
Da Boss iz Watchin: +2 modifier for any rolls on the Mob Rule table, with a possible penalty if breaking heads or squabble comes up on the mob rule chart.
Must accept challenges and issue them. If the warlord kills an enemy character in a challenge he can re-roll all failed to wound rolls the rest of the game.