User blog:Musical5678/Electra in Cats Movie 2019

So I was researching the 2019 movie cast and I found something interesting on one of their instagram's. One of the cast members had posted the cast grid of the 2019 movie cast in their story. On the named characters page It said Electra will be played by Ida Saki. This was never announced. I  can't help but wonder why this hasn't been announced or revealed. Maybe because she's a minor character? I don't know. Does anyone have any ideas why this isn't known?