The news quashes rumours that Dawn, who has played Vera Duckworth for 31 years, was about to retire.
"I've read stories about my health with people hinting I may be leaving but that is rubbish," the 65-year-old told The People. "I've only just signed a new two-year-deal.
"I'm very happy on the show and have no intention of quitting."
Bill Tarmey, who plays onscreen husband Jack, is now expected to follow suit with a new contract.
Speculation had been rife that the Duckworths would be departing the cobbles later this year after winning the lottery.
More: Soaps
Soap Scoop
All About Soap nominations - full listSee the full list of nominations for the All About Soap Awards.
Soaps Interviews
Neighbours star teases Rhys's futureBen Barber chats to us about his latest Neighbours plot and more.
Soap Ratings
Helen Flanagan's Corrie exit draws 9.3mThe young actress brings in more than 9.2m for both episodes in the double bill.
Reality Bites
Does Simon Cowell have new SuBo?: VideoWatch a clip of Jonathan Antoine, who is tipped for success on BGT.
