As of the 28th of January 2013 Arena Net has made many new additions and changes to the Guild Wars 2 world and client. This one gigabyte (1 GB) update adds in the new Flame and Frost Prelude which is the first entry in the multipart Living Story series which gives the world of Tyria that much more of a living ever changing world feel. The Living Story part of the update adds new Achievements, events and heralds to apprise adventurers of the events currently happening in the world of Tyria.
New Daily Monthly Achievement system is now in place where you will be rewarded in Laurels for completing the achievements and can be traded in for an assortment of rewards to better suit what you would want as a reward.
Transferring worlds now costs a gem fee which is determined by the level of players in the world you wish to transfer to. But for those that do not wish to leave their home server but just want to jump over to another world to play with friends in PvE can use the new guesting system.
The update also makes UI improvements, fixes, rebalances, and tweaks to polish stuff, which include changes to dungeons, the open world, fractals and dynamic events. A full list of whats in the update can be found here.