Welcome to join cocos2d-x!
cocos2d-iphone just released its xcode4 templates a few days ago. And we created issue #398 to do this in the next version.
But I cannot find an offcial document about this on apple.com. Riq said that “The new format is not documented, so, in order to create the new templates a lot of copy & paste, and trial & error was needed”.
I don’t know if we create a new project from xcode3 template, then open it in xcode4, what will happen? Will it crash or work correctly? If the created xcodeproj can be upgrade automaticly by xcode4, that maybe the best approach to create cocos2d-x new project, before we finish issue #398. (Honestly, I haven’t download xcode4 yet, my friends tell me it’s too slow, and too strange with its hotkeys)