Devolver Digital's Fork Parker announced on the PS Blog that Hotline Miami - the original, not the sequel - is launching on PlayStation 4 on August 19th (in North America at least).
It'll mostly be the same as previous versions, although players will be able to use the DualShock's touchpad to look around and lock on to enemies. Also, shaking the controller will initiate executions when you have enemy patrols pinned to the ground (with the sound of their death pumped through the controller's speaker - yuck).
Crossbuy was also confirmed in the post, so if you've already got the game on PS3 or PS Vita, you've got it on PS4 too.