I wonder if they’re just teasing us with the Part III designation, or if Parts I and II are related to the tasks after the bone chip collections somehow… or if Parts I and II are already in game and just require non-quest tasks that are completely obscure, like having to fish for the koalindl in the water to get the release option.

Hard to say, but a good reason to keep your eyes open!

The 80 epic guards in N Qeynos only see invis as long as they are red to you, by the by. After level 65 I had no issues with any guards in N Qeynos, but be aware that they do path down into the Temple of Life area… need to be quick as an evil!