ZoS has announced this maintenance pretty early (last Friday iirc), is very insistant that it should be carried out on Tuesday (for that they even extend the event! ), and they have (silently) changed the maintenance duration once. All this fuss makes me wonder what this maintenance is for, yet for this part they said nothing. I don't get it, why would they be so reluctant to tell us what the purpose of this maintenance is? It just doesn't make sense. Be it for bug-fixing, scripts-recoding, hardware-upgrading or anything else, I cannot think of a single reason that makes ZoS feel they need to keep it a secret...