Build app with iOS6 SDK for AppStore when iOS7 will released

Question

I need to make some minor changes in app that already in AppStore. If I build app under iOS7 SDK then all UI elements have new look and new "layouting". For fix it I need a time. So my question is:

• Could I build app for AppStore under iOS6 SDK after iOS7 will released (Sept 18)?
• Should (and can) I use XCode 4 for posting to AppStore after iOS7 will released?
• Could I use XCode5 for build app for AppStore with iOS6 SDK?

Big thanks for your replies!

Alexey

Answer 1

Could I build app for AppStore under iOS6 SDK after iOS7 will released (Sept 18)?

You can, but I don't know how long.

Should (and can) I use XCode 4 for posting to AppStore after iOS7 will released?

You may use either XCode 5.0 or XCode 4.6

Could I use XCode5 for build app for AppStore with iOS6 SDK?

I think you can't.