Your Guild Wars 2 client could be getting an upgrade in the near future, particularly if you have the hardware to handle it.
ArenaNet Game Director Colin Johanson announced on Reddit today that the studio is testing out a new version of the game: “We are rolling out a beta version of a 64 bit client today if all goes well — please give this a shot if you’re having crash issues and let us know if that does the trick!”
If you want to test the new client, you can download it from your Guild Wars 2 account page. Commenters in the thread have already remarked that the game is running more efficiently and utilizing more resources with the 64-bit client. There’s also an extensive 64-bit client FAQ for those looking for more information.