From what I read about the CV3 last year I get the impression that it is the AK 550 with a reworked front end.
And now Kymco has announced at EICMA another new/continued 2023 AK 550 Premium! Also not available in the USA. I say "continued" since it is basically the same as the 2022 AK 550 ST that was released earlier this year and being continued for next year. So far I've seen one dealer in the USA that has the 2022 AK 550 and is advertising it as for 2023, but still showing it as a 2022 model in the description. The 2022 AK 550 is the Euro 4 version and the AK 550 ST or Premium models are Euro 5 or better. Mine is the 2022 USA model.
I have yet to get excited about the CV3 or any other 3 wheeled scooter like that. Just feel like too much mechanics to go wrong to me. Though I'm sure they have it well engineered to be reliable. At least I don't recall reading about any issues with them.