Just announced this week! That's... basically all we got - Game Informer has the scoop, obviously - but between this, Exist Archive, Darkest Dungeon's (likely-to-be-delayed-again) late-summer launch and Attack on Titan, fall 2016 is already lookin' plenty dense.
I'm super-pleased about this! Dishonored had its problems (you basically have to play 100% monster or 100% angel, and angel is way less fun), but it was without a doubt the spiritual successor to the legendary Thief franchise. I love it.