Right, so I played for 2 hours. I like it!
The game oozes atmosphere. I always loved Arkane's aesthetics, so the graphics, though not cutting edge, are very appealing to me, mostly due to the gorgeous design. It also plays very much like any of their previous Dishonored games, in terms of handling.
I played the first main mission/area and died twice but not a third time, so no restart for me (I have not read much on the game, so I am not sure exactly what items I can keep between loops/deaths).
So far no crashes, but there is stuttering here and there, mostly when I move between internal and external areas (as in, inside a house for example and about to exit or even look outside windows/doors to the open area).
First impressions ... very good.