Yes! New additions have appeared. The TR1 update is now implemented in most environments.
Your older book is still useful for learning the basics. But you'll want to find a link for TR1 to learn about some very useful new features. In several areas, new features are preferable to older ones. (What comes to mind, the functionality of bind1st and bind2nd is completely encapsulated in a more general binding construct.)
In addition, acceleration libraries exist. (boost.org) Boost is a collection of libraries, some of which are very useful, others are obscure. Some of the functions in TR1 were triggered by a boost, so some overlaps. There is at least one good book on Boost.
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