I hear that the console game platforms have strict requirements for their games. For example I just read an answer that stated loading screens must have an animation on them so that the game doesn't appear to be frozen -- this makes sense, of course! I think a lot of the guidelines in these books would probably be great information.

Are these documents protected in some way or is there someplace on the internet where I can read them? I would love to read through all the guidelines for good design that the console manufacturers have put in place to give console players a good experience, and probably to adhere to them in my own games (at least those which are not console-specific, obviously).

So, where can I find these fabled console video game design guidebooks?