Imagine this - you're stuck at a bit in a game, its been frustrating you for hours and you're dangerously close to perforating your TV with a Dualshock. You know your friend has already beaten the game and could get past this bit in a minute but he isn't there. But he is online on PSN...
With Share Play, you'll be able to invite him into your game to take over your controller and get you back on track.
That's an amazing feature, and another step along the route of socially connected experiences which Sony wants to bring to its players. But the new software goes even further than that. For some titles, you'll be able to invite a friend into the game even if they don't own it!
PlayStation wants you to think of Share Play as a 'virtual couch' - making getting into games together as easy as handing the controller over. The possibilities are pretty exciting and, we assume, they're based on the upcoming PlayStation now service which allows for game streaming; all the better because the other player won't have to wait for a lengthy download to get into the game.
Play Share will be part of the PlayStation 4's 2.00 firmware update, which is planned for late 2014. It will also add new video uploading options as well as real name search of PSN, all aimed at bringing the online community closer together.
We'll have more info on Share Play very soon. Expect it to launch by late 2014.