With the success that Ubisoft's Assassin's Creed (PC, Xbox 360, PS3) has been acquiring, the developing company will try out it's luck by porting the game title over to the Nintendo DS. No news was released if the same thing will happen for Sony's PlayStation Portable.
Some people felt that the game should be released for the PSP as well. As such, an online petition has been started to let the developing company know what the Sony handheld fans want. It aims to catch the eyes of the company with they way the Resident Evil PSP petition was able to do. If you want to participate in the online petition, head on over to source link below.
Assassin's Creed petition:
Assassin's Creed for the PSP Petition 
Assassin's Creed petition:
Assassin's Creed for the PSP Petition