When learning about any Apple product, it’s important to keep in mind that Apple likes to change things (sometimes quite dramatically). This book was written based on Xcode 3.2 tools, which have looked very much the same for the past decade (like the versions of Xcode that preceded them, and the NeXT tools before those). In mid-2010, Apple released the first “developer preview” of Xcode 4, a release that, to borrow a phrase from Steve Jobs, “changes everything.”
Xcode 4 pulls all of Xcode and Interface Builder into a single window. No more floating windows with tools and inspectors; instead, everything is consolidated into a single iTuneslike view, as shown in Figure A.1.