The new emblems will be unlocked as your clan earns more XP. Itís still unknown when the emblems will go live in-game, but they should be unlocked retrospectively.
Here is the last emblem which is unlocked at level 50.
In my opinion it's about time they released something for CoD Elite. I find it as a "uncompleted" package. And it lacks the amount of stuff people would expect it to be.