Dice is celebrating 1 billion hours of BF3 played total and the BF4 reveals at E3 with Double EXP and Free Close Quarters DLC. The way it's worded it sounds like you get to keep CQ DLC after the event is up but only get it for free while E3 is going on. So if you don't have it I say download it and get some games in!! and it says here that premium is 50% off while E3 is going on and you get a new dogtag if you are already a premium member which has to do with BF4's single player. Double EXP is going to last 144 hours(only for premium members sadly) and it started at 2am PDT.
Here is the link with info http://mp1st.com/2013/06/10/battlefi...#disqus_thread