Been fantasising over what it's like to boot up a game from PS4's XMB? Of course you have, and here's a video showing just that with Battlefield 4.
It's important to note that this video was captured on development hardware and not the final PlayStation 4 system. Additionally, the build of Battlefield 4 is not the final build either. It may be that loading times are reduced on the final version of the hardware and the game.