This weekend, ArenaNet gave select members of the press a chance to see the current beta of Guild Wars 2. We had the opportunity to create Human, Charr, and Norn characters of any class, and play through each race's level 1-30 zones. Additionally, we had access to the Ascalon Catacombs, a level-30 dungeon, as well as the opportunity to play on all of the Player vs. Player battlegrounds and try out the World vs. World vs. World PvP.
I could use this preview to go into detail on the various systems (how combat works, what the classes are like, character creation, etc.), but you can find accurate information on most of those topics on ArenaNet's website. What I found most fascinating about my time with Guild Wars 2 is how different it feels from any other MMO I've played before, while still keeping most of the elements of the genre intact.