When the current gen iPod Touch 5 was released a couple of years ago, I don't remember many, if any, leaks.
The iPod Touch 5 is currently a great deal. I'm not a big gamer, but it handles every other function I do really well. I wish it had a GPS radio though, and I'm curious to see if the next gen will have one.
If you've got money, though, you should wait for the next gen which is likely around the corner. I seriously doubt Apple is going to kill the touch line.
My conspiracy theory: I personally think leaks are promoted by Apple, since people want to know about wether or not they should renew their contract with another phone, or wait to renew when the new iPhone comes out. That's why we don't hear about or see iPod or iWatch leaks, because there's no contracts needed.