It is a CI plane Just that both KLM and CI have an agreement to be able to sell tickets on each others plane. If you last flew CI from AMS over 2 years ago you will find the plane much better than the old A340. The only issue I see is the flight is 1 or 2 hrs longer.
CI currently flies the A350 and later this year will go to a B777 which is same aircraft that KLM uses to TPE.