I recently added an additional test case to my packaging testing. After packaging, I now "validate" the app with apple. Prior to 1.8.0 SDK, this test would pass using the same test project. As of 1.8.0, the test app fails validation with the error "Icon specified in the Info.plist not found under the top level app wrapper: iTunesArtwork".
Steps to reproduce:
1) Create a Studio project with all 7 possible apple icons present
2) Be sure to remove the png extension from iTunesArtwork
3) Package for distribution from Studio
4) From the Xcode archive, select "validate"
Validation fails with error shown in attachment