Well if Peter Jackson were directing, it would get tons of awards, have tons of gore, and not be for the audience that the books were written for, and everyone would say it was spot on with the authors original intent...
It's hard to say how it will turn out now however, though if it is updated to modern society, soon Lewis, like Tolkien will be spinning in his grave, but everyone will say that the films are exactly like he envisioned them...and certain fans will swear by it. In fact, the movies will become more popular than the books!