I obtained one of these today in Woolies (they had thousands) and I am about to eat it live, on the forum, to give you my verdict.
It seems thinner than traditional Flakes, it doesn't look that dark. I'm about to bite into it ....... well it's certainly flaky, it's quite sweet, it tastes a lot like Bournville.
I think next time I will have to chill it. I find chilling chocolate makes it taste less sweet.
All-in-all, although i like dark chocolate, I prefer the milk Flakes.