When something goes wrong, it can bring previously overlooked detail into focus. Recently, the SD slot on one of my Pi broke - an aparently common problem. When I got LXF173 I noticed that the picture of the Pi on the front cover, and repeated on pages 14 and 72, sports a different SD holder that protrudes beyond the board's edge. None of the Pi that I possess have this feature - instead having the fragile one.
This got me wondering whether variations on the board exist that offer the opportunity of getting a Pi with a more robust slot.
Or, maybe, the photos used are of an earlier prototype - its connectors are also a different colour to mine. Perhaps LXF needs an updated stock photo of a recent board revision ?