So what will they call the caffiene free version?

It does taste way more cokey, than Diet Coke.
Milder than hi-test coke, but that same oversweetened herby, cinnamony cokeyness. The ingredients are the same except for added acesulfame potassium. And whatever the difference is between their respective “natural flavors.”
So “have a (chemically enhanced non-*coke*) Coke and a smile.” Or “buy the world a (Zero).” And s***.