Come join the fun on the PTR and instead of getting the PUG blues, you could end up grouped with a blue. Members of the Development Team (including the encounter designers themselves) and the Community Team will be on the PTR to test out the new dungeon system and want you to come join in the fun. Join us tomorrow, November 4 beginning at 4 PM PST.

For a chance to group with us, be sure to use the Dungeon system and choose the “Random Heroic” option.

All Blizzard employees participating should have the tag in front of their names. Each employee will be able to pick whatever class, realm, and faction he or she wants.

(Source)