As of October 2023, there has been no official announcement regarding a fourth Narnia movie following "The Chronicles of Narnia: The Voyage of the Dawn Treader." While there have been discussions and interest in adapting the remaining books in C.S. Lewis's series, including "The Silver Chair," no production dates or casting details have been confirmed. Fans of the series continue to hope for future adaptations, but for now, the status remains uncertain.

"The Chronicles of Narnia: The Voyage of the Dawn Treader" is the third film in the Narnia series, released in 2010. The fourth movie, "The Silver Chair," faced cancellation due to various factors, including changes in studio ownership, creative differences, and the decline in box office performance of the previous films. After Disney's departure from the franchise, the rights were acquired by Fox, and while there were plans for a new adaptation, the project ultimately stalled, leading to its cancellation.

As of now, there has been no official confirmation of a new Narnia movie scheduled for release in 2026. However, Netflix has announced plans to adapt "The Chronicles of Narnia" series, with potential projects in development. The timeline for these adaptations remains unclear, and no specific release dates have been announced. It's advisable to keep an eye on official news sources for updates regarding any future Narnia films.

"The Chronicles of Narnia: The Voyage of the Dawn Treader" is not a Disney film because, after the release of the second movie, "Prince Caspian," Disney decided to exit the franchise due to financial underperformance and a shift in focus towards other projects. Consequently, production was taken over by 20th Century Fox, which released the third installment in 2010. This change marked a shift in the creative and financial direction of the Narnia series.