The directory ~/Library/Developer/Xcode/Templates/Project\ Templates/Application should be populated with the Xcode plugin's Project Templates.
However, it is still empty after installing SpriteBuilder-1.3.0-beta.07.zip:
~/Library $ ls ~/Library/Developer/Xcode/Templates/Project\ Templates/Application
~/Library $
It should be 👍
~/Library $ ls ~/Library/Developer/Xcode/Templates/Project\ Templates/Application
BridgeKit Application.xctemplate BridgeKit Service.xctemplate JNI Application.xctemplate
~/Library $