Great idea! This book is excellent, and though the principles are timeless, it would be a shame if the data became outdated.

Sadly the source code for the book doesn't appear to be published. This is unlike David Mackay's otherbook, "Information Theory, Inference & Learning Algorithms", does have the LaTeX source published (see http://www.inference.phy.cam.ac.uk/mackay/itila/book.html ), though not in an open source license.