I like stealth based game too, Splinter Cell Blacklist is out but I'm not gonna get it before seeing the actual gameplay video, kinda miss the old Splinter Cell series.
Try Metro Last Light, Uby.
Started it few weeks ago, you can go gunblazing and sometimes required to do so especially when fighting mutants but its better to go incognito against humans, you can clear the stage without attacking anyone if you want to.
What's make this game different is when you arrived on the surface, you gotta wear a gas mask and a filter else you will suffocate and die in less than 2 minutes, filter has its own time limit and the gas mask can be broken if you take too much damage on the face, so yeah unless you can move fast on stealth you have to kill one of the bad dude and steal their mask.