At the last PASS summit, I had a chance to talk for about an hour at breakfast with a man from Microsoft who is part of the BOL team. According to him, so many new things are coming out so fast that just keeping the documentation up to date is a real challenge.

I thought that the question was a good one, and the discussion even better. (I got it wrong because of my interpretation, but so what?) A lot of information about index structures and index types came out in the discussion.