So, here’s what is going on. I tested this problem today by packaging a build from the 4.9.2 binary and submitting it to Apple. It worked. Building the same project fails on 4.10, just as you are seeing. However, if I take a code based project and build it in 4.9.2 against the iOS 9.2 SDK (built from PC), then it fails to upload properly just as it does in 4.10.
So what I think is going on is a combination of things. First, like I said before, we are not properly adding a piece of data when we sign on PC (I know this from some of my previous investigations). This was fine in the past, but as of iOS 9 SDK it seems to no longer be considered a valid signature (this requirement and data was probably added because of the new ability to make apps for your own phone without needing a provision). That being said, the 4.9.2 binary being used for your content-only game on iOS was built against the iOS 8 SDK and so I believe the app store upload process knows to ignore the new requirement for anything built against the iOS 8 SDK or lower.
In the end, the fix is still on our side as we need to be compliant with the new requirement when signing from PC. I am continuing to look in to that fix and I am hoping to have the fix for 4.11.
-Pete