The new 2010 iPod Touch has been revealed, including features that were expected but not included on the 2009 model.

4th Generation iPod Touch
At just 7.2mm thick, the new Touch has shed some of its bulk including that rounded back many users complained about. A new microphone is included to support FaceTime, but should also work with other applications on the App Store.
As expected the new iPod Touch is running on Apples A4 processor just like the iPad, iPhone 4, and newly released AppleTV. While Apple doesn’t like to publicize the amount of RAM in iOS devices, the current generation iPhone has 512MB so that would be a safe bet for the iPod Touch.
Apple also gave the new touch a significant screen upgrade: Apple’s Retina display at 960×540 resolution. Read more
Reader Q&A: When will FaceTime, iMessage and iChat merge across Mac and iOS?
Several of our followers on Twitter and Facebook have recently expressed interest in the state of Apple’s efforts to merge its various forms of messaging/chat/videoconferencing/IM functionality across its two key platforms, iOS and Mac OS X. New code spotted in iOS by third party developers may shed some light on this. Read more