Any issue continuing iOS5 development with the iOS6 SDK installed?

Question

I'd like to download and install the iOS6 SDK, but I'm concerned that I'll step through a door that I can't step back through. I need to continue production-ready iOS5 development while playing with iOS6. Is there any issue about having both SDKs installed? (I do understand about the OS installed on particular devices; I'll have both iOS5 and iOS6 devices.)

Answer 1

I downloaded and installed the new beta. Since Xcode 4.3, Xcode is mostly self contained and 4.5 exists happily alongside 4.3

Answer 2

You cannot send apps that were generated by beta software to the app store, it will get rejected even if you build the app just for iOS 5. I would suggest that you install Lion/Mountain Lion on an external drive to play around with iOS 6.

Answer 3

Don't do it. I downloaded 4.5 with iOS 6 SDK and now the "Base SDK" is set to iOS 6 and I cannot change to anything less than 6 and half the libraries we use complain about armv7s slice.