That's not really training on the watch itself. People are bound to ask question at the Apple Store about the watch and they are just going over what information can be shared (not much). Basically, "Don't speculate on the watch, when it will be released, its battery life, or anything else about it. Don't make disparaging remarks about the watch or its competitors. Express excitement about the watch. Direct customers to the website." Low level Apple employees won't be trained on the watch until just a few days before launch. It's part of how they prevent leaks.
Ah.. I see. This makes more sense.