Today at its iPhone launch event, Apple announced yet another piece of hardware: the fifth-generation iPod touch. As rumored, it has a 4-inch display, the same 326 ppi panel used on the new iPhone 5. As you might have guessed, this is also the thinnest iPod touch to date, measuring in at 6.1mm and weighing 88 grams (3.1 ounces). On the inside, it packs an A5 chip promising seven times the graphics performance of the last-gen model. The battery is rated for 40 hours of music playback, or eight hours of video.