Uhm, so basically that's Gaikai and what they have been talking about since release? You know, streaming games. Initially PS3 titles, later PS4 titles you own (like to your PS Vita, or to your tablet).
I mean, it's really amazing. You've got the 'old reliable way' where there is a disc inside your PS4, or you use the hard drive. And than there's the new, additional option: access to all your games, wherever you are on whichever device.