No, as far as I know there's nothing published yet. It's over a year away! But there is some debate as to whether it will be run in September (like 2002) or in July 2004. If Sept I will most likely be there. If July, most likely not.
Have to say the 2002 event was one of the highlights of my year. Just fantastic racing and a Classic Le Mans piss up too.
Finally, I would also recommend going on the P&O Portsmouth-Cherbourg Party Boat, leaving 8.00 friday night. It docks at 9.00am saturday after a thirteen hour party crossing with two live bands and an all night bar. Just right to get to the curcuit by 2.00pm. Then back home on a sunday night crossing and into the office by nine thirty. Just like the old days!