In a few tweets between iOS developers, one developer noted that their app, along with many others, were missing their launch screen images (the image that's displayed when the app is launched but before it's actually loaded) due to a fault in the way Apple's system generated the different app thinning variants (including the "no thinning" variant).
Apple appears to have realised that the launch images were being incorrectly removed and has rebuilt all of the affected app's variants, pushing them out again. So the version number of the apps are identical, but now the apps correctly have their launch images.
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