question

It does not seem like they have integrated Victron in to their system yet. They say that the iNet X system is continuously under development, so perhaps in the future they will do the integration or maybe you can put a request to them to do it.
From the Victron side, various protocols for other manufacturers to use are already open and available like MQTT or Modbus-TCP.

According to the specifications, the new Truma iNet X control panel should work with TIN-BUS, CI-BUS, CAN-BUS protocol.

Victron has it’s own Ve.CAN protocol which most probably is (indirect) capable of communicating with the TIN-BUS, CI-BUS protocol Truma is using. (I’m no CAN-bus specialist)

The biggest challenge in my opinion, is the willing of manufacturers, to let their hardware communicate with other brands in the same industry. I think that a manufacturer (like Truma) mostly wants to sell it’s own hardware, and therefore is probably not too busy making it’s connections compatible with the same type of hardware from the competitors.

But I must agree with you, and would say that Victron has it’s own business, not directly interfering with Truma in this case. When Truma would start with out of the box connections towards Victron Ve.CAN hardware, this might attract extra customers, without lossing revenues on their own hardware.
Unless Truma also has future plans for its own off-grid electronics.

When looking at the progress “Matter” is making with the biggest brands in the wireless domotica hardware, we could be positive, and hope such cooperation might happen in the RV industry too.

So on TRUMA bluetooth there is no way Venus GX could connect ?

Just looking into this myself.

I've found someone on github who has done something with simulating a truma inetbox.

https://github.com/mc0110/inetbox2mqtt

Now this is for someone who is smarter then me to have a look into this.