Yea I think I will buy it tomorrow as well. Wait to pick a server though. My friend should also be getting it this weekend.

Edit: NM, I just read the FAQ
Finally, unlike existing MMOs, all characters in Guild Wars inhabit the same virtual world -- they are not divided onto different servers or shards -- so players can always team up with or compete against any other player in the world.

Twenty-eight days... six hours... forty-two minutes... twelve seconds. That, is when the world will end.