By Mark Savage
Entertainment reporter, BBC News in Cannes
The last St Trinian's film was launched at Cannes in 2007
A further movie in the rejuvenated St Trinian's franchise will be released in 2009, it has been announced in Cannes.
No cast has been announced yet, but directors Oliver Parker and Barnaby Thompson will again take the helm.
The most recent film in the series was a box office success last year, and starred Gemma Arterton, Russell Brand and Rupert Everett.
Ealing Studios also unveiled an adaptation of Dorian Gray and a wartime romance by writer-director Amma Asante.
St Trinian's: The Legend of Fritton's Gold will follow the unruly schoolgirls on an adventure described as the "Goonies meets The Da Vinci Code".
Writers Piers Ashworth and Nick Martin are handling the script, with filming due to start in January 2009.
Dorian Gray stars Ben Barnes, who will soon be seen as Prince Caspian in the new Narnia film.
Where Hands Touch is the second film from director Amma Asante, whose debut, A Way Of Life, won a Bafta.
It tells the story of a mixed-race girl living in Germany who falls in love with the son of a senior SS official.
"When everybody around you is Hitler Youth or Jewish, and its not okay for you to fall in love with either, what do you do?" Asante said.
"And of course teenagers still fall in love, they still snog in the back row of the cinema, and they still run to the beach and have walks through the countryside."
Trinian's 'buffer zone'
Although it has operated as a studio for more than a century, Ealing Studios' film production business has only recently been resurrected.
Academy Award-winner Julian Fellowes is just about to start filming drama From Time To Time for the company.
The movie, which stars Dame Maggie Smith, tells the story of a young boy who moves to live with his grandmother during the war.
"I think it's fantastically exciting that Britain now has a real film company with a studio making movies that are going out and being seen by the public," he told the BBC.
"We haven't had that for three decades."
The director said that populist films like St Trinian's helped to keep the film industry going, and created a buffer zone for more esoteric, personal projects.
"I like making films people want to see," he added. "I don't want to make a movie about someone having a hysterectomy in the Midlands."