Well this is exciting. Probably the most exciting thing to happen in Guild Wars 2 since it launched. If you haven't seen, over on Reddit a mysterious image of the White Mantle has appeared under the banner "Obey". Posted by 'Suspicious_Figure' (a user who has no Reddit posts or history) it is a dump and run image that has unleashed a hornets nest of comments and theories about the return of Mursaat. Whether it is a piece of smart marketing by ArenaNet or a giant troll the Reddit moderators have fallen for, either way it's intriguing.
For anyone who doesn't know, the White Mantle were a theocratic order from Guild Wars 1 and a governing body of Kryta. Known for their militaristic behavior and police state approach to governance, the also used Jade Constructs. These mechanical like creatures did the bidding of a group known as the Mursaat.
The Mursaat are beings that pre-date humanity and are capable of hiding from anyone who doesn't have "True Sight". For several years the Mursaat held a grip on Kryta, supported by the White Mantle. Though the White Mantle were overcome at the Battle for Lion's Arch, groups of them did survive. Considering the fate of the Mursaat was never known, there seems too many indications within the game that it could be anyone other than them.
As master manipulators, I can't imagine they would want to see the Queens Jubilee go ahead when they seem themselves as the true rulers of Kryta. What better way to sow the seeds of disorder than to coerce the Aetherblades to fight for them, alongside their Watchwork mechanisms (that have evidently replaced the original constructs).
Even if this doesn't all come to pass (and I must stress this is all speculation) it's an exciting piece of viral marketing that deserves praise, even if it is a lone Guild Wars 2 fan. I can't wait to see how it turns out and I'm sure in the next few days, we all will.