Todd Dominey comments on some of the new features in the Flash 7 player by posting a series of links which specify the new Objects and Methods and some early concerns.
Interestingly, Colin Moock has posted up a petition directed at Macromedia to make better use of the preloading API.
Currently some of the concerns includes no support for http server responses such as 404 (not found) or 403 (forbidden), the order in which loadMovie() executes, and inconsistencies of getBytesLoaded() returned values from IE and Netscape.