Inside, the second game developed by Playdead, will be released on PS4 "at the end of August" according to VG247. The site spoke to someone it referred to as a trusted source.
This rumor doesn't seem farfetched. PS4 trophies for Inside were spotted on gaming-oriented social site Exophase earlier this morning. On top of that, developers from Playdead gave an interview with Push Square in early July assuring players that Inside would come to PS4 sooner or later. "Our goal is of course to get Inside into the hands of as many gamers as possible, but we can't say anything about other potential platforms at this point."
Then there's the release pattern of Playdead's previous and first title, puzzle-platformer Limbo. It started out on Xbox 360, leaped its way onto PS3 and PC, and then skipped over to myriad other platforms including PS Vita and Xbox One.