This is a new twist on getting picked for the HoT closed beta. Instead of tossing your name into the hat (or abyss) we actually get to hunt for a drop, in-game, that grant access! Wow. More details here: https://www.guildwars2.com/en/news/claim-your-spot-in-the-next-heart-of-thorns-closed-beta/
So, I'm running a one-time Portal Hunt event Tuesday afternoon in the Silverwastes. Join us as we kill everything with our fingers crossed, until our eye cross. Wear your lucky socks!
UPDATE: For folks who prefer to hunt portals in Dry Top, [DTOP] Is running their zonewide event tonight (Wed, 29 April). http://www.reddit.com/r/Guildwars2/comments/348qxb/dtop_dry_top_portal_runs_na/