Guys... have you seen this?
(i mean the void veil, the zone was here since vanilla)
That is the Quel'thelas landing area in the zone north of the eastern plaguelands (on the PTR).
The skybox changes as soon as you leave the settlement.
Something is going on here that is intentional. Now, if it's an easter egg or a dev troll, who knows?
What do you think? Void Elf settlement/city/staging grounds in the works?