As soon as Steven and Tom say so. A direct adaption of the book was completed by English film crew about October 2004. It was filmed in the same locations that H.G. Wells used when writing the book. (He apparently rode his bike between the towns fairly frequently.) They successfully pretended it was a historical film to hide its true title. Unfortunately as Tom now owns the film rights to the story we won't see the English version until all the hype has calmed down with his own. I believe it is for that reason that Jeff Waynes CGI animated version has not left the drawing board, even though it has all green lights and funding.