@never_released is exactly where I ended up, but I was hoping there was more information available. Sadly, it looks like researchers on Twitter and `man cryptex` are the only sources of information floating around for this stuff.
Apple will probably write a paragraph in the platform security guide this fall. The real meat of it will probably remain on Twitter, or if you're lucky, a good blog post.
Do you have specific talk links? I'd love to dive in more but I don't know which sessions contain the most useful details.