Guild Wars 2 players can now share wardrobe items throughout their account and explore 40 new traits in Tyria, while PvP warriors can choose their rewards before heading into battle.
More important, ArenaNet have introduced a Megaserver System:
ArenaNet's megaserver technology is designed to intelligently bring players together to enrich the open world experience of Guild Wars 2. This system dynamically opens and closes maps to accommodate player activity while bringing players from different home worlds together. As part of these exciting changes, ArenaNet is restructuring the schedules of its open world boss encounters and allowing guilds to kick off the most challenging events to be found in the world of Guild Wars 2.