I'm thinking that the new iPod's will be unveiled at the same event that the new iPhone is coming (late Sept or early Oct). Doesn't make sense for Apple to have two separate events. Might as well combine them. Especially considering that the new iPod Touch will most likely borrow the form factor of the new iPhone (which I believe will be a larger screen and elongated button, as rumored, especially given the latest news with the photo stream beta icon leaking).