In response to raymondtoonen post: Sure, its hard to find a trainer for Diablo II. But if you look again at Diablo II you will see there is a save editor, with ALOT of features. Why would you need a trainer? You can include map hacks and other tools, mods and hooks.
On topic: Even if CH wont be interested on creating a trainer for Diablo III, you can all be sure that hacks will exist. We all know why there probably we wont see a trainer here.
Anyway, CH will keep providing good trainers in others games and that is what matters. Diablo III is just a game, not a life.