Don't start a war please that its not posted here by Luca, since its only an ETA (E for estimation) and not put in stone, but that is what he answered when I send him a mail asking about the most likely time of it to show up at Unity.
He got the instructions how to do it only yesterday. And it most likely will end at monday or tuesday morning depending on when they apply the latest patch to catch up with NA-shards.
Personal guess since I'm not sure about this: This patch most likely reverts the vault back to normal since this was the reason patch were delayed for unity for several weeks now. I want to stress, I'm NOT sure about this, if someone can confirm it (not only guess or hear-say), I would appreciate this. I just wanted to tell you, so you at least can consider that development, ok?