Isn’t the EU 3.1 version supposed to include plug n charge?
I don’t think the US 3.1 version includes this feature. It seems EU 3.0 vs US 3.1= Same.
Maybe you're correct, but the US 3.0 is one step premature of the EU 3.0.
VoA's announcement to their US dealerships which was subsequently shared here referred to a port-installed 3.0 update in early June that would require a later dealership visit to update to 3.1, and 3.1 available for port updates someone in very late June/early July. And that's how it played out.
This is where it's dicey. 3.0 and 3.1 are clearly different.
In the EU, owners will get 2.4 in shop, then (according to VW First Movers) get 3.0 OTA.
In the US, we'll get 3.1 in shop, but the tech will need to step us through 2.4 (and 2.3) to get us there.
So... since US 3.0 cars will require a shop visit, it's logical to conclude that 2.4 (BMS module update) will be applied at that time (2.4 only became "available" in late June, coinciding with 3.1 being available to install in port).
But why would VW AG be communicating to their EU owners that they will OTA to 3.0 some time after they've been shop-updated to 2.4? I can't make sense of that.
In other words, 3.0 in the US = no BMS update.
3.0 in EU = post-BMS update.