The latest update to the iPod touch edges in ever-nearer the iPhone 4. Indeed, it can even make calls now.Ok, it can't make networked mobile calls (or it really would be an iPhone 4), but it does now have FaceTime, which means you can interact with your touch or iPhone 4 buddies over a Wi-Fi network, thanks to a front-facing camera and mic. That's not all it shares with the iPhone 4 either.Apple’s has also added its Retina display, displaying 326 pixels per inch for clearer, sharper imagery that looks 'natural' to the human eye. The iPod touch will also run the new iOS 4.1, which we detailed earlier.In addition, you'll find a rear-facing, HD-friendly camera for stills and HD video, with easy sharing via email, MobileMe and YouTube, along with editing via iMovie app (which you'll have to download for a small fee). Apple’s A4 chip is also at the centre of the touch, benefitting what has always been a big selling point on the touch - gaming.To enhance that gaming experience, the new iOS update introduces Game Center, which brings social gaming to the touch, while music lovers can access the newly-launched Ping music networking, outlined here.You can order one now, with 8GB, 32GB and 64GB being the sizes. Prices are £189, £249 and £329 respectively.