New information from Japan suggests that PS4 remote play will run at full resolution on PS Vita.
According to the information from a Japanese magazine, you do not need to encode or change the format when you transfer movies from PS4 to PC.
In addition, it's also being suggested that the two cameras on the PS4 will detect user's location even if the user doesn't have the Dualshock 4 or Move controller at hand.
Sounds like there is a lot more to the PlayStation 4 still to be revealed. E3 will certainly be interesting.