ArenaNet has recently shed some light on the Halloween finale that will be taking place tomorrow morning Pacific Daylight Time. Unlike Guild Wars 1 this event will run continuously throughout the day, so don't worry if you can't log-in at a specific time.
Also, make sure you satisfy your Ascent to Madness dungeon itch as it will become unavailable as soon as phase four has been pushed into the live server.
See you all tomorrow!
Once Phase 4 starts, the Ascent to Madness dungeon will no longer be available – but you will still be able to enter the Mad King’s realm, including the Labyrinth, the Clocktower, Reaper’s Rumble and Lunatic Inquisition.
Also make sure that you will “Attend the Party” in Lion’s Arch once Phase 4 starts, and do not worry: It is a non-stop party, so swing by any time you want!