512x512 image for AppStore (iTunes Connect), will Apple do corner rounding like they do on the phone?

Question

Upon submission of an iPhone app to iTunes Connect for AppStore distribution, they ask for a 512x512 pixel image. Here is what it says next to the place to submit it:

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Answer 1

Your intuition is correct - Apple applies the glossiness and rounded corners automatically in the iTunes Store, so just upload a flat square version.

Don't worry if the rendering looks terrible in iTunes Connect - it will be fine once it's on the store.

The iOS Guidelines appear to be incorrect.