Tried it on an app I’m developing and also tried it with the PewPew demo on device. The launch screen doesn’t seem to appear.
Defining the assets like this instead of as line by line config works. You can get the Images.xassets from
https://forums.coronalabs.com/topic/72743-error-itms-90709-on-submission/ there is a Dropbox link there
tvos =
{
xcassets = "Images.xcassets"
},