I'm running Build 4A304a and for the life of me I can't find it in Xcode or any reference to it on the internets.
any help would be greatly appreciated.
Right-click the target and click Duplicate. Choose to Duplicate and Transition to iPad.
Select your project in the Project Navigator, click your target, and then click the Summary tab. You can switch your iOS Application Target there to Universal.
Here's a screenshot:
来源：https://stackoverflow.com/questions/5355958/where-is-upgrade-target-for-ipad-in-xcode4