Earlier quoted context omitted.
XCode was in fact always included with the OS X images.
No. Xcode was on a separate disk, never on OSX's. Again, Xcode was never a part of the base install or of the OSX image. edit: wow, is that how low HN has sunk, voting down reality-based statements and voting up complete nonsense?
"You may also be able to install Xcode 3.2 from your Mac OS X 10.6 DVD and then run Software Update to get the latest version."
http://guide.macports.org/chunked/installing.xcode.html
" There’s actually a third version—Xcode 2.0 shipped on the original Tiger installation DVDs back in April. "
http://www.macworld.com/article/46286/2005/08/installxcode.h...
etc. It's been on every OS X install disc I've used, which goes back to about 10.4.