Learning OpenCV: Computer Vision in C++ with the OpenCV Library - 2nd Edition

The 2nd Edition book description (on Amazon) says the book has been updated to cover new features and changes in OpenCV 2.0.

I am told that there are extensive changes between 2.0 and 2.3. and the OpenCV API is currently already at version 2.4.3.

Q. Which actual version of the OpenCV API does this book cover?

(Since there were books already in the market on version 2.0 of the API over a year ago, I am expecting that this book covers version 2.3 or 2.4 of the API)
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