While a touch screen is great for puzzle games and the like, there still is no equivalent to the good ol' button when playing a shooter or any other rapidly-paced action game. The PSP2 or "NGP" as they're calling it, delivers on both fronts with a new touch screen interface as well as the buttons you know and love. Sony's latest portable is also their most robust, implementing features like a hi-res (960 x 544) OLED screen, dual analog sticks, 3G, WiFi, GPS, and a Quad-Core ARM9 processor. Release is slated for this Holiday season. Link
Sony jumps on the retro train with a "classic" version of the PlayStation
The original PlayStation was released 23 years ago.