iPhones coming with Lightning to USB-C cables and a new Type C charger (same size, maybe upped to 7.5 W) yes please, it's about time.
iPhones with USB-C instead of Lightning? I don't see that nor want it.
With AirPods Case, Siri Remote, Magic Keyboard/Trackpad/Mouse, Watch Dock and even beatsX they're all in on Lightning, what a mess that would be. And remember Phil's promise when Lightning was introduced in 2012?
I also don't see non-Pro iPads switching to USB-C anytime soon.
Two more years, maybe a bit longer, and iPhones will have no port at all. Lightning will (and should) stick around until then. For small devices like a phone, it's just the best mechanical connector design out there. USB-C is much more fragile.
As for the iPod touch reports, I personally don't have any use for it, but of course I'd welcome a new one. We'll see.