Wonderful news for the roughly everyone on the planet who plays Shadowgun: Deadzone: a whole bunch of new stuff is rolling out today! Notably, there's the Gangs feature which allows you to create groups of friends to play with. There are also a couple new maps that you can explore. And by "explore" I mean "kill things in."
There are also new weapon upgrades, some additional hats (because every game has to have hats now, right TF2?) and bug fixes and tweaks all over the place.