When the PS4 launched on November 15th, there were already two games in the Playstation Plus Instant Game Collection that PS+ members could download, Resogun and Contrast. While they are free exclusively for PS4, anybody with a PS+ membership can download them right now. All you have to do is go to Sony’s online PlayStation Store site, sign in, add the games to your cart and checkout. The licenses to the games will be linked to your PSN account and you can just download the games whenever you buy a PS4, as long as you’re still a PS+ member.
[Source: Game Informer]