ArenaNet has announced that their subscription-less MMO Guild Wars 2 sold over 3 million copies since its launch on the 28th August 2012.
Since then, the MMO enjoyed updates that included new content, two massive holiday events, brand new PvE and PvP maps, and the major Lost Shores world event. ArenaNet, however, is promising even more content for 2013, according to the developer's.
In addition, ArenaNet has posted a YouTube developer diary discussing what to expect in 2013 as well. Check it out in the video below.