It makes sense that the next version of Apple's iPod Touch would come with a couple of the features from the iPhone 4; mainly, a front-facing camera for Facetime chats and the higher-resolution Retina display. And a leaked faceplate makes at least the first of those seem very likely.
The leaked photo, which purports to come out of a an Apple parts supplier, clearly shows what would be the faceplate of a next-generation iPod Touch, complete with a conspicuous hole for a front-facing camera.
It'd certainly be nice to expand the number of devices that are able to have Facetime chats from one, wouldn't it? It sure looks likely.