I have never used a promo code to test an approved app before releasing it to the store. I did so with my game that just got approved(will post codes here once its out). What I noticed was when I reedem my promo code, while downloading it shows a scaled down version of the 512x512 graphic i uploaded. When the download finishes it switches to the correct icon. The 512x512 they are showing looks like crap. So the big question is, what will the app store show?

Does anyone know if this is just a promo code thing? This will be a show stopper if its not.
Thanks for anyone who can help me