iOS7 requires several new app icon sizes which Flash Pro CS6 and CC do not support. It's been 4 months now since iOS7 beta, and exactly 1 month since official iOS 7 released. Adobe, if you wish people to actually use Flash as a serious game dev platform, you have to move faster. Please add the new icon sizes to Flash Pro's publishing settings and issue a patch update ASAP.
The new update(Flash Pro CC release - November 2013) that has a fix for this issue is now available to you. This Flash CC update will update your flash version to 18.104.22.168.
You can update from the Adobe Creative Cloud application or from Flash Pro CC Help -> Updates menu.
You will find more information on the update at: http://helpx.adobe.com/flash/using/whats-new.html
I have 22.214.171.124 and unfortunately there are NO new icon settings under iOS Publishing panel. No 76, 120 or 152.
I just re-read the update release notes about this and it mentions we can MANUALLY add them. This is quite silly. I never understood Adobe's inabliity to issue patches that alter portions of Flash Pro's functionality. It's always through some work-around. It's 3 extra lines of icons in the publish panel, not rocket science.
Updating app-descriptor.xml file to add supported icons is available only from Flash Pro CC build version #126.96.36.199 onwards. can you please ensure that you have this update version installed?
Also note that you can add icons that are supported by the AIR SDK that you are using while publishing.
For E.g, 144x144 icons are supported by AIR 3.9 onwards. If you manually add them and publish using AIR 3.6, these will not work.
Can you let me know the icon sizes and the AIR SDK that you are using?
OK so what was happening is this:
I had included the new icons under "Include Files" section of the publishing panel from before support was added. Now that support is added, if these files are still "included" it conflicts with the definition in the App XML file. So the solution is to remove them from included files.
All good now after doing this.