QUESTION :
All of the Xcode upgrades I can find are Snow Leopard only. Can you still upgrade Xcode on Leopard?
ANSWER :
You can install xcode 3.1 which is on your leopard install disk, or can be found by visiting http://developer.apple.com/ registering as a developer (it’s free) going to “downloads” then “developer tools (in the right column)” XCode 3.1.4 is about half way down.
Xcode 3.2+ can only be installed on Snow Leopard.