It seems they’re not far from finishing and have the first few chapters up for early access and feedback. It could be the go to text for learning the protocol.
Probably exactly like O'Reilly's other instructional books. The post says that the first two chapters are already available on their learning platform.
he surely knows the tech. what's concerning is how he's blocking anyone trying to contribute to work on it if it doesn't fit his agenda. very concerning and self centred. a total waste.