This thread says a new firmware will be released in December with Net TV improvements:

I would like to come with a suggestion
Netflix by default starts in 50Hz mode, which causes the picture to stutter in Super HD movies, as they are 24P (or actually 23.976 fps). I hope you will add a feature within Netflix that will detect the framerate of the material you're trying to play, and set the output accordingly to that.

I know it can be done, because you can trick the Netflix app to output 24P, if you start playing a BluRay before entering Netflix. But I feel stupid having to play a BD before I can get the right Netflix-picture

Thank you!