ANet is ramping up the second Act of the Halloween festivities today at 12 Noon PST. Here is what ANet had to say on the Official Forums today:
It’ll happen at noon (PST) today. There will probably be a build to address some things, but the phases start completely independent of builds.
Click here for the original post, and make sure to stay tuned to GWI for more updates to our Halloween Guides page!

