My heart sank to the bottom of my stomach when I read this paragraph near the beginning of MS's Documentation set for SQL Server 2012:
"SQL Server 2012 introduces two significant documentation changes; a new help viewer that changes the way that you install and view the documentation, and the documentation has been restructured to address issues with previous versions of Books Online.
SQL Server 2012 Books Online contains a smaller set of foundation content optimized for users who are searching for information about how to complete a task."
So in other words, they're going to describe less of the technical aspects and more of the "The field labeled Whathefu©kdoesthisdo means for a random stranger to tell the software what the baffling thing it does does do."