Cryptic Studios' Shane Lacy Hensley talks about City of Villains in a new interview at GamersInfo. A snip:
Q: What's the "short take" on how PvP will be working (as far as you can tell us, at least)?
A: There are lots of different kinds. There are arena duels, PVP missions, and free PVP zones. The most exciting to me are the PVP missions and base raids. (Remember that all of this is consensual -- you'll *never* be forced into PVP if it's not for you.) PVP missions are just like regular missions, but give the other "side" the possibility of entering and intervening. We're still nailing down the way it works *exactly* but that's the gist of it.