red-band trailer
n.— «More uncensored versions, referred to as “red-band” trailers, are popping up on the Internet, with studios using them as a marketing tool to reach older audiences not as likely to be offended by super-violence, sex or use of the “F” word. In the process, the more provocative trailers allow them to telegraph to moviegoers the edgier content of their films.» —“‘Red-band’ Web trailers show all the nasty bits” by Robert W. Welkos Los Angeles Times Oct. 26, 2007. (source: Double-Tongued Dictionary)