I believe the Essential version is V2; but I upgraded, so cannot confirm what was loaded.
I *believe* the upgrade window officially expired, but cannot recall the dates. It was an email offer (for 10 days) after registering the Essential version that came with X3.
I would recommend emailing Celemony directly, telling them your situation and asking. They have been responsive to X3 customers, in general, as far as I have seen. It is better to get your question answered from them directly, I think.