Since the last rumored PS4 gamesharing method was released and inevitably patched, @HackYourPS4 passed along confirmation that there was one private gamesharing method remaining... but perhaps not for long, if the incoming release is it? 
According to PS4 scene developer @zecoxao on Twitter, to quote: "yet another gamesharing method is coming soon, for PS4 consoles."
Note: For those on lower PS4 Firmware it's recommended NOT to update your PS4 console for this method, as $ony is likely to patch it very soon and then you'll be stuck with a PlayStation 4 console that can't run backup games, emulators, exploits and homebrew with no way of downgrading the PS4 once the 'temporary' method is patched.
Spoiler: Method Demo Video
Sony's Method for Sharing PlayStation 4 Games
Cheers to @kizabg for the heads-up on this earlier today!
According to PS4 scene developer @zecoxao on Twitter, to quote: "yet another gamesharing method is coming soon, for PS4 consoles."

Spoiler: Method Demo Video
Sony's Method for Sharing PlayStation 4 Games
Cheers to @kizabg for the heads-up on this earlier today!