Edit: PSP Only, so stop your bitching.
Website: http://www.rockstargames.com/libertycitystories/gta_lcs.html
Trailers 1 and 2 (save link).
I'm so glad they went back to Liberty City/Mafia. No more ballin', representin', hangin' wit teh homies, or protecting the motherfucking hood. Thank God...