Of course not, and why should they? It has been figured out a long time ago that the constant regurgitation of the familiar will net at least "X" amount of revenues. As an added plus, this allows writers to focus "new" material on social-issue movies like "John Q" and "Erin Brockovich" that try to teach you to vote for the Democrats.
I have some fairly (ahem) exclusive contacts in the industry and here is a list of new films being worked on for release in 2005-2007:
Match Game '75: The Movie
Captain Caveman
Goodnight, Beantown
My Three Sons
Tenspeed and Brownshoe
Why don't they make a remake of the remake.
Are they ever going to make another Raiders of The Lost Ark?
Ford is not getting any younger and his last several movies have been terrible.