I'm here to say it is not!
The अगला movie will be The Magicians Nephew.
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लोमड़ी, फॉक्स (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 प्रिय book after LWW.
लोमड़ी, फॉक्स is hoping that TMN will have a better turn out than the Voyage of the Dawn Treader.