Actually, not quite accurate.
There was no article about Korvosa in book 1; we published an entire BOOK about Korvosa. The hardcover will include a much shorter companion gazetteer that presents information about Korvosa specifically as it exists during the queen's rule, but the Guide to Korvosa book will not be reprinted in whole in the hardcover Curse of the Crimson Throne. All the information you'll need to run the campaign will be in the book, but most of the extra content that can be useful if you want to expand your game out of the contained plot into other locations in Korvosa will not—that information will still reside in Guide to Korvosa (or might have a few tidbits in the Korvosa gazetteer, depending on the site).
Looking at the back matter articles in the originals...
Book 1: The article about the Harrow and how to use it in the campaign stays, but the article on Varisians will not be reprinted.
So what replaces them? Are there New articles? Is it your additional adventure? or is it just less space overall?