Consider iOS version is captured in the user agent string, this should be an easy add to the mobile reporting, surely? We really need this information.
It's also important to capture the mobile browser version - Chrome for Android updates independant of the underlying OS, and there are third-party browsers available for both iOS and Android. Is this also being implemented, or should I raise a separate topic?
I'm pretty happy with the level of detail offered in v15, but as an additional data point we are now also capturing the useragent string into a prop. This is can be done via a variable shortcut:
s.prop35="D=User-Agent"
The only major issue is that quite a few useragent strings exceed the variable length so they are truncated.
You can now see mobile operating system versions, as requested. I will mark this as "partially implemented" because the request for Apple device versions has not been implemented yet.