There will be a 10 hour long maintenance starting from 6/25/2009 00:00~10:00. Please make sure to not log during this period. Also, the website will undergo maintenance as well from 00:00~08:00. After the maintenance, all the 4.0 updates should be included within the game.

- Virtue

EDIT: The time is KR. You'll need to adjust to your own timezones.