Hi @zack, apologies for the wait whilst I tried to confirm for you which states are externally available. Yes, you are correct that via the C++ route (stream engine) you would only get the Hardware information.
I am afraid to say that the Tobii Interaction Software versions are not something publically exposed in any detail in the Tobii Core SDK .NET Bindings, nor do we provide support for accessing these states. What is available is again simple hardware and firmware versions as documented online and in the samples as provided earlier.
If you could kindly clarify your intentions for the SW versions information, perhaps we can find a workaround suitable for your needs. Thanks for your understanding.