It will change nothing. Cuba will still be the same under Castro's brother, Raul. It will be unbelievable if the new Castro will be turning the country that is 90 miles away from Florida into stable and to have relations with the United States. As long as Fidel is alive, he will keep watch of Raul to keep Cuba the way he wants it to be unless the US intervenes, but it will not happen at all because of the history of the Spanish-American War.