Recently Xcode started adding keys to the Info.plist of my Cocoa app:
What are those keys used for and why do they all of a sudden appear? Are they needed?
I'm using Xcode 3.2.6
These keys serve as information about the development environment.
Fox example, Xcode add them when you code-sign your application before submitting it to the App Store.
They also appear in the binary details of the application on iTunes Connect.