This [1] is the official press release by Deutsche Bahn. I wanted to post this instead, but it is in German.
[1] https://www.deutschebahn.com/de/presse/pressestart_zentrales...
[1] https://www.deutschebahn.com/de/presse/pressestart_zentrales...
They should just use the new picture and not make the previous way of doing things so central. If one just looks at the picture it could appear as if the wall changes translucency dynamically.