Witcher 3: Pretty obvious, really.
Risen 3: Massive Piranha Bytes fan here, and after the mess that was Risen 2, I'm still hopeful. It drops in a few days, and from what I've seen and heard it looks much, much better than the second game, so I'm quite optimistic. Hell, I'm excited even!
Mount & Blade 2: Bannerlord: Warband is one of my favourite games, with over 1,000 hours sunk into both single and multi player, so I'm pretty fucking excited. War of the Roses was shit, Chivalry was okay, but man, Mount & Blade is where the fuck it's at as far as medieval combat simulators go, so I'm looking forward to it. Holy fuck yes!
I'm also looking forward to Wasteland 2, Pillars of Eternity, The Age of Decadence, Runemaster and the new Planescape game (forgot its title) but not as much as the others I mentioned.
Oh, and Kingdom Come: Deliverance is looking absolutely amazing, but that's not for a while off yet.