So I talked with the hotline again but they couldn't/wouldn't help me at all. They said I should wait for a new update.
Then I drove to the Samsung HQ here in Germany and they gave the number from the complaint management.
I called them and they will redirect my issue to the technical site and they will call me back soon.
Thanks for the effort!!
I also have the same problem with UE55D7000 001021 firmware but i am not sure if it is 1021.1, 1021.2,... Where can you see this information?
It is very visible when you start a video in the screen with the "loading" blacks are perfect but once the video start with a black screen it is almost white!
Hope samsung will correct this soon! it's been a while!