They already have the mark, It's included in their profile.
Although you don't get anything else rules wise, other than what is seen there
Plus withe new list, the sorcerer that commands the units doesn't even have the option to buy an icon... and there is no armoury that he can select from.
Dark Angels 1750 win/loss Record
Win - 23 (Belial helped wreck Ryan's puny Eldar)
Loss - 13 (Brice's Necrons wiped me)
Draw - 2 (The 13th hold out in alpha take and hold)