Wireless Smart Thermostat V3 - Vitodens boiler - OpenTherm query

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Hi - I have an Visseman Vitdodens 100 OpenTherm compatible boiler. OpenTherm updated their technology in 2021 and I want to know it the Wireless Smart Thermostat V3 supports the full latest Open Therm technology which was updated in 2021? I presume I need to get the EU version? If so, is there anything additional required?

This post here mentions the below which confuses me.

1x Starter Kit - Wired Smart Thermostat V3+ and 1x Add-on - Wireless Temperature Sensor. Please bear in mind that we don’t provide installation instructions for this specific setup. We recommend that you ask a local heating engineer to wire your devices correctly for you.