The amount of content here is incredible. Did Apple create this, or fans?
It's unofficial, there was a discussion on Reddit yesterday with people asking if the author would provide access the content to archive it in case Apple DMCAs it, to which he gave some childish strop in response about how he deserves the in(fame)y. You'll find it on /r/DataHoarders if you care to look.
I dunno, he kinda does to an extent? No reason for him to be an asshole about it, but this is an excellent resource and very well-put-together.