Some people on this site think the Silver Chair will be the tiếp theo movie.

I'm here to say it is not!
The tiếp theo movie will be The Magicians Nephew.

Source: link

link

cáo, fox (instead of Disney) decided that they will be skipping the Silver Chair and just going on to the Magicians Nephew.

I am very sad that the Pevensie will not be there.
I think another reason they are doing TMN is because many people say it is their yêu thích book after LWW.
cáo, fox is hoping that TMN will have a better turn out than the Voyage of the Dawn Treader.