Iphone5 Or The Ipod5?

Apple iPhone 4G 16GB Quadband World GSM Phone (Manufacturer Unlocked)
The new Iphone5 is only going to be different in the Camera Focas and 3g/4g..everything else is pretty much the same on a ipod..well thats what im hearing that the new ipod 5 will have 3g options and will be able to use other carriers..will with it being able to jailbreak..im sure it that wont be hard anyway.