The Warhammer Herald has word that maintenance is now in progress to add the new version 1.2.1 patch to Warhammer Online, as described here. There is some unscheduled maintenance being done at the same time to some realms, and there's also a note for participants in a current siege: "We are aware Phoenix Throne is currently in the middle of a city siege on Altdorf, once the servers are online the timer will reset and you will have a full two hours to continue your assault."