Do I wait to buy PlayStation 4 games?

It's that time where all the games that start to come out now will also come out when the PlayStation 4 arrives. So now I'm stuck wondering if I should buy the games when they come out for my PlayStation 3 or wait until I have a Playstation 4 and then buy the games. Examples of the games I want to buy are Arkham Origins, Deadpool and LEGO Marvel Superheroes