For everybody wondering why their emblem hasn't unlocked, it's quite simple. We will receive the emblem when the full game is released. Everything is reset after the beta so it would be useless to get it now as it's a reward to advertise you played during the 'flashmob' on the beta. Bungie will know who has been on during this time and you will receive it.
-
I was really confused, cause after the Moon mission, I didn't receive any sort of message and I was thinking "What's happening here? I thought I was getting stuff." So this really helps out.