There are seven books in C.S. Lewis' beloved The Chronicles of Narnia series. They've been published all over the world, translated into dozens of languages and sold over 100 million copies since first published in 1949. It's safe to say that the fantasy series about children discovering a gateway to a magical kingdom is very, very popular. The live-action movies that were adapted from the books, however, haven't been quite as universally embraced.
2005's franchise kick-off The Lion, the Witch and the Wardrobe did exceptionally well with over $745 million in global box office. The two sequels since then, though, have each failed to come close to that bar. Neither Prince Caspian or The Voyage of the Dawn Treader were outright bombs, but CGI talking lions and flying beasts and ice queens aren't exactly cheap special effects to produce, and so the future of the series was put on hold back in 2010 while the various companies involved figured out how to proceed. And now we know the answer, and it's one that's pretty common in Hollywood these days. Just press the reset button.
There is an uncommon factor to Narnia's reboot, though. They're not pulling a Spider-Man or a Fantastic Four and essentially retelling an origin story audiences recently saw. The next movie will still be the fourth book, The Silver Chair, it just won't contain any of the current series' cast or crew. It may not even contain all of the same characters from the earlier films/stories. Producer Mark Gordon was a bit vague on details but recently told Collider, "it’s all going to be a brand new franchise. All original. All original characters, different directors, and an entire new team that this is coming from."
Gordon did clarify that "original characters' doesn't mean they're just inventing some random new people to anchor the movie, rather that they're going to be pulling from the larger world of Narnia for their character pool. And that makes a bit of sense. It's been half of a decade since Voyage of the Dawn Treader, so actor continuity is already a bit out of the window since the young cast isn't quite so young any more. So instead of simply recasting and continuing as if nothing happened, they're taking a cold look at the source material and reassessing a way to continue this story that is perhaps a bit more inviting to audiences who won't feel like they need to do homework to catch up on a film series.
Now we should say that as of now this is still a hypothetical project. It has no release date or director and obviously no cast, so it's going to be a little while before we start hearing more concrete news on its development. But for now this is an interesting turn of events, and one that should give Chronicles of Narnia fans a ray of hope that they may one day see the series continued in live-action.