Is there a way that we can retrieve the iOS version that is currently being used enrolled users?
Unfortunately this low level OS information is not currently exposed to the container, but we have seen this request before so please feel free to request it, together with your use case, on our Public Roadmap
I think the implications of getting that kind of information from the OS will mean more scrutiny and additional permissions that the user will need to grant to the container - that said, and assuming that is the case, it may be possible to build specific custom containers that request this kind of additional details. But now I am getting into implementation details which is not my department so I will stop before I say something foolish (in fact, it may already be too late for that)
TLDR: Submit the idea on the Public Roadmap