Rumors about a new iPod Touch to be introduced in a special event in September have been around for a while. The new device should feature a camera, probably a smaller one like the iPhone 3G.

Since the main focus of the iPod Touch marketing are games, the device will probably also feature a faster CPU and possibly the new graphics chip that also powers the iPhone 3G S.

Analytics firm Pinch Media says it’s seen the device string for the new iPod multiple times since April. The usage pattern repeats the one seen for the iPhone 3GS and directly suggests that Apple is testing compatibility with the new iPod touch to guard against any show-stopping flaws before the device goes live.

Determining when this new iPod touch will be released is difficult. The iPhone 3GS was seen in October 2008 but wasn’t released until eight months later — but the iPod touch normally borrows components from the iPhone that preceded it and therefore needs less testing prior to release. The iPod touch has always been updated in a special music-themed event held in September.

So, if you’re thinking to get an iPod Touch 2G now, my recommendation would be to wait a couple of months :)