Recently I was uploading a build that I thought was working particularly well, but I forgot to verify what was in the Player Settings of Unity.
This resulted in my uploading a build with Version 1.0.9, but Build # 0.
I'm pretty sure Apple is picky about that second number, so now I have to increment the version code again to build against the correct build number.
If the Uploader or even the iOS builder told you what your current version numbers were, it could avoid accidentally sending the wrong version numbers. The XCode archive window showing these details saved me uploading the wrong versions multiple times, and it'd be cool to see it here too :)