There is absolutely no need to remake Planet of the Apes. Arguably, I suppose, you could justify doing it if you wanted to stick close to the original novel, which was set in a high-tech future run by apes, but to be honest I'm not sure the novel is a better story, just a more involved one. The payoff gag in the original film - thought up by Rod Serling - is really superior to the one in the book.
And I just like the movies, you know? I like all five of 'em. Roddy McDowell's speech in the end of "Battle for the Planet of the Apes ' - yeah, it's a terrible movie, but that monolog he gives sells the whole thing. There's no point to remaking 'em, and there's absolutely no point if you're gonna' give 'em to someone like Tim Burton who, lets be honest, can only make Tim Burton films.
That said, I have to say this trailer that Neo just sent me is actually pretty intriguing. It's a new take on how the apes evolved - which admittedly is pretty hokey in the original films - and I think it's unquestionably wise to start off with a prequel rather than the story we all know way too well. It gives them a lot more lattitude as to where they can go next, if there's enough box office to justify going anywhere at all.
Special thanks to Neo for pointing this one out to me.