I’m confused; Wersi OAS instruments have been able to do this for years, (So it’s hardly new) as it has a computer at its heart.
What is it used for? Teach INS to show the screen display to the audience, Karaoke if you’re that way inclined. (Virtually all Wersi players avoid this like the plague)
The main use however is a video camera and screen to let the punters see what you are actually playing, without being hidden behind an Arranger/Organ, (Who knows whether you’re playing or not if they can’t see you) and also for mood shots to enhance the music experience.
So we come back to the beginning, what’s all the fuss about.

Bill