Programs used for working out the examples, problems, and most of the figures.
The gray-scale figures of the book - especially the simulations - become much more informative and beautiful in colours.
In the books there are sketchy microbiographies of all the major scientists that have worked on continuum physics. Here you find links to more extended biographies.
More problems with solutions.
A collection of links to interesting pages, news, extra material destined for a future edition, and other goodies.
Misprints and minor corrections.