We should expect a movie that quite differs from the books, the radio show and the TV show. The script has a new angle to the story, there are new plot elements and even a few new characters. So if you get in line on the day of the premier and is eager to see a film adaptation of the books/Radio/TV-show, you are most likely bound to become disappointed. The story is probably mostly reinvented, but rest assured that its all still Douglas Adams.
http://www.douglasadams.se/movie/
