How could I forget about
Grim Dawn?
Of all the screenshots and videos I have seen of it so far, it looks really good.
Titan Quest is still among one of my favourite hack n' slahses, so if they can improve on that I have no doubt that this game will blow Diablo 3 out of the water. Then again it doesn't take a lot to do that, I mean just look at Torchlight 2.