Its not just a pve updates in sequels. I was refering to an example for factions. The way they would change pve is through the use of different versions of areas ("rooms") that they can instantly switch between with next to no need for downloads because the game is always online. As for what they can do I gave the example of PvP pre-implimented things like Iron Banner, but there is more. They probably could not do heavy modifications that implement major changes, but with the "always online" setup of things they are able to change things (like the "rooms). You would have to download new things that are stored on hard drives, of course. Various podcasts and things talk about how they can add different textures (like snow), lighting (day/night), or other things. The possibilities will, in my predictions, allow them to make "holiday events" for things like the "embassitors" that appear once in a while. I'm do not have vast amounts of knowledge in this subject, so I may not be the person to ask.