These are not new to me.
Agreed. New article, old photos.
These are new photos as of the past week. For some reason this car is not being tested with the new wheels, headlights, or taillights. My guess is they want to do high speed aero testing, where the mirrors will come in to play (but new headlight and taillight internals don't). The key here is that the tester in the new photos is in Germany as seen from the plates - all the past ones were spotted in Korea. Could be Autobahn or Nurburgring testing. Manufacturers typically begin testing on their own test tracks, then public roads in the surrounding areas, and finally in distant areas to undergo more extreme use cases.
Could be you're thinking of a red test car from here or here, both from months back but in Korea with the current model's mirrors.