Just 5? I can list a few I know I am already totally sold on.
Shin Megami Tensei IV: Apocalypse, as a MegaTen junkie, this game will give me a good fix for a long time. It looks like it will ironing out the more irritating issues that SMT IV had, so good times await.
Battlefield 1, will see how it goes at launch, if it has few notable issues at launch, I will get it asap, otherwise will wait for them to work out the kinks.
Phoenix Wright: Ace Attorney 6: Spirit of Justice, always loved me some Ace Attorney action, still salty The Great Ace Attorney never came out in the west...
Final Fantasy XV, I could wait for the inevitable PC port, but I need an excuse to dust off my PS4 and its a mainline FF game, I am more than willing to give it a spin.
Persona 5, got the special edition pre-ordered, its shaping up nicely and its presentation so far has been outstanding.
Pokemon Sun, its more Pokemon, consider me sold.
Tekken 7, might actually split the cost of this one with a friend, as I am mainly buying it so we can play against each other on the couch.