Le site shacknews fait le relais d'une rumeur intéressante, le jeu Rez pourrait bien être porté sur PSP : Something else came up in the discussion that was rather intriguing: a PSP port of United Game Artists' Rez. This too is sounding like a pretty sure thing. If you're unfamiliar with Rez (PS2, DC), it's a 3D floating-through-space shooter that has an incredibly clever synthesis between music and gameplay, with the electronica soundtrack building up in time with the player's actions. The game was designed by Q Entertainment founder Tetsuya Mizuguchi, who recently designed Lumines (PSP) and produced Meteos (DS). Anyway, with this upcoming port as well as the once impossible to find PS2 version of Rez being made available again, you shouldn't have any problems getting your hands on the game if you desire.
Selon ces informations, il semblerait donc que ce ne soit qu'une éventualité d'un portage sur PSP du jeu, on espère néanmoins que si portage il y a, le jeu se verra ajouté quelques nouveautés ... (A noter aussi que le très sérieux site Gamefront fait le relais de l'info)