Found a blurb in World Magazine today--

Hollywood-- Walt Disney Co. and Walden Media announced that they have started preproduction on Prince Caspian, a sequel to this year's blockbuster hit The Lion, the Witch and the Wardrobe, with the goal of a Christmas 2007 release. The new Narnia film will feature the same four child actors as the Pevensie siblings, as well as the same screenwriters and the same director, Andrew Adamson.