How do i migrate an app to iOS 5? (or turn on ARC)

I've got an app i'm working on and i just started using iOS 5. I'd like to start using Automatic Reference Counting but I'm not sure what steps i need to take to either migrate to iOS 5 or at least to turn开发者_开发百科 on ARC.

If you look in Edit > Refactor menu, you'll see an option called Migrate to Objective-C ARC. That tool will help convert your code to ARC.

iOS 5 docs are not publically viewable yet, but in your Xcode you can go to the Organizer and view documentation. Search for "Programming with ARC Release Notes" and there's a document in there which will hopefully answer most of the questions you have about the process.