Division IP developer Martin Hultberg of Ubisoft. Hultberg talks a bit about the game's backstory as well as how players will interact with the game world. There are certain level restrictions, for example, as well as equipment requirements for entering a given area (gas masks to deal with contagion levels, etc.).
Hultberg also mentions that players who buy The Division get a tablet version as well, so if you can't make it home to your console (and eventually, your PC, right Ubi? RIGHT?), you can be a fifth wheel of sorts and "support the four other players" via your tablet.
The interview clip has a lot of gameplay footage spliced throughout, so head past the cut and have a look for yourself.