iPhone how to submit an app with a non-glossy retina display icon?

Question

I noticed that all of my attempts at a retina display 114x114 application icon image automatically have a gradient shadow overlaid on top of them. My icon already has transparency over a black background, and the second gradient shadow makes the background look less black

I noticed that quite a few apps have their icons appear "flat", having no shadow. Is there some flag that I can set in my project to request this semi-circular shadow effect to not be applied to the icon?

Updated: Xcode 4.2 iOS 5.0 as deployment target. Only 1 deployment target. For some reason the suggested solutions do not seem to work. I have The property added to the target. I see the boolean of YES for both the raw UIPrerendered icon and the "icon already includes gloss effects". I've replaced the icon files and tried different icons. I've uninstalled the app from the development device and reinstalled it. I did a clean. The gloss effect is still there. What am I forgetting?

Update 2: After 45 minutes of messing and losing my sanity, I noticed that there's another Dictionary in the Plist:

Icon files(iOS5). Within that is a Primary Icon Dictionary,

within that is another declaration of "Icon already includes gloss effect". That one is set to NO. Setting that one to YES removes gloss, and makes my icon look awesome :) My guess is that as I migrated the project to iOS5, that key was added

PS. While on the topic of icons, I built an icon maker app for iPhone that allows me to vary the intensity of the gloss effect, as well as include/exclude some icon elements from the gloss. I still have to tell xCode that my icon is "pre-rendered", but I control the gloss effect.

Answer 1

In your Info.plist for your target add the following attribute.

Answer 2

After 45 minutes of messing and losing my sanity, I noticed that there's another Dictionary in the Plist:

Icon files(iOS5). Within that is a Primary Icon Dictionary,

within that is another declaration of "Icon already includes gloss effect". That one is set to NO. Setting that one to YES removes gloss, and makes my icon look awesome :) My guess is that as I migrated the project to iOS5, that key was added

Answer 3

on ios5 (and higher) just go on Targets-->Summary-->App Icons und check on "Prerendered" - glossy effect is then away