To prepare the servers for launch day ArenaNet has announced that it will be performing another stress test for Guild Wars 2 later today.
The test begins today, August 10, from 7:00pm EDT until 11:00pm EDT. Characters will not be wiped before the test, so you can carry on from where you left off. The test is only open to players who have pre-purchased the game.
With this being a stress test you mat experience some connectivity issues and lag spikes.