This could very well be the warm-boot sequence for the PS4 (from OS to lunching a game)
This was created by a Neo-Gaf user based on the video that Sony posted today showing the boot sounds of each PlayStation console. At the end, the PS4 logo shows up and a sound very similar to the PS2 warm-boot is played.
If this is it, I love it. Sony going back to its roots. Best next-gen boot-screen confirmed? :P