The copyright notice for new projects in Xcode was getting set to my old company name (which I haven't worked for since before I bought my Mac) and I couldn't find a setting for it in any of the Xcode preferences.  I did find a few sites, including apple's developer site (here) that say to use the defaults command from a terminal window to set it:

defaults write com.apple.Xcode PBXCustomTemplateMacroDefinitions '{"ORGANIZATIONNAME" = "Symmetric Designs";}'

 

(or alternatively you can add the symbol to ~/Library/Preferences/com.apple.Xcode.plist)

But this bugged me since

defaults read com.apple.Xcode PBXCustomTemplateMacroDefinitions

didn't show that it was already set, and my old company name must have been coming from somewhere.  Anyway, the bottom line is I eventually found a reference to the XCode 3.1 Release Notes:

The ORGANIZATIONNAME substitution value in templates is now replaced with the Company Name from the current user’s Address Book card if present, rather than __MyCompanyName__. If the PBXCustomTemplateMacroDefinitions user default has already been set, it will be honored.

My address card did have my old company name on it (which had gotten imported from Google).  Changing that worked and I didn't have to mess with the Xcode defaults!

 

By the way, if  you want to change more of the template, the iPhone ones are located in: /Developer/Platforms/iPhoneOS.platform/Developer/Library/Xcode/Project Templates/Application

Read more: Changing Copyright Notice For New Xcode Projects - Just Change Your Address Card!