Clearly, ArenaNet is out-of-their-minds insane. Luckily, it's the kind of insane that benefits us a great deal. A mere two weeks after the grand finale of the Halloween update, a "massive content patch" titled The Lost Shores will be rolling out. Evidently today's patch dropped some subtle clues about what's happening in LA. A more elaborate explanation of planned content - both from the November release and further into the future - can be found in MMORPG.com's interview with that lovable rascal Colin Johanson. New sPvP map could be interesting.
And here's that patch I mentioned earlier, with good news for people who had to miss Act IV of the Halloween event and people who hate orbs in WvW alike.
EDIT: GW2 communiteer Dulfy has compiled a list of the changes that have so far been made to Lion's Arch.