The writers of Bridget Jones's Diary say the sequel is "looking good".
Andrew Davies has already written two drafts of the second film, to be called Edge Of Reason.
His writing partner Richard Curtis says he's pretty sure Renee Zellweger will star in the film.
"She's an Oscar nominee for the first one", Curtis said.
Curtis and Davies refused to comment on whether Hugh Grant's role would be expanded in the sequel.
But speaking at the London Film Critics' Awards, where they won the Best British Screenwriters award, they did say they had a "very cunning" way around the dilemma they face over Colin Firth.
In Helen Fielding's book, Bridget Jones interviews the real-life actor Firth, who is expected to star again in the film as Mark Darcy.