It would be nice for them to include it but I doubt they will. In order for the watch to be of much use, there has to be a constant data connection. Something the iPod obviously can't always offer. Also, the target markets for the two devices are much different. One is marketed as more of a luxury accessory whereas the iPod is marketed as more of a kids/gaming/media device.
Really, the only reason I could see apple adding watch support is the fitness aspect of both the watch and iPod. But if it hasn't happened by now I doubt it will. Maybe iOS 9.1 or something like that.