This should be interesting...
The ArenaNet team has made the decision to lift the district barriers that were previously in place between different language areas in Guild Wars.
As part of our goal of supporting global player interaction, we are making changes to the Territory and District user interface. As of later today, players in Korean language districts can travel between American, European, and Korean districts. Players in Japanese and Taiwanese language districts will be able to travel to the other language districts following a subsequent game update in the coming weeks. The end result is that players in any language district will be able to travel to any other language district within Guild Wars. We will continue to offer International Districts as an additional location for players to meet one another.
Read more at the official site.