According to a news bit from Cinescape Online, New Line Cinema is looking to strongly promote their upcoming Lord of the Rings production at the Cannes International Film Festival. As part of the plan, the studio also announced that they will be previewing selected footage from all three of the upcoming films. There has also been a previous rumor that suggested that the full trailer for Fellowship of the Ring may also be in the preview works.
Regarding this big push, in an official press release from the studio Rolf Mittweg, President of Distribution and Marketing, is quoted as saying, "Cannes will serve as our official worldwide media launch for The Lord of the Rings. As the global press converge on the Croissette, New Line will pull out all the stops to ensure that movie fans everywhere discover the first installment of this epic cinematic event."