Not only the block diagram is wrong but the Power Tree aswell (which is somewhat important). And Page 10 clearly says that the VCC-5V is connected to the GND Pin of the USB, which is also not correct..... I don't really trust these schematics anymore....
Just tried this aswell, and indeed it's a lot better. Weird.....
Anyways, there doesn't seem to be some kind of regulator involved so it's all good now!