A spokeswoman for the BBC soap told DS: 'Letitia will be returning in early June.'
When asked about the news, the actress said: 'I'm really looking forward to coming back to EastEnders and working with the team.'
Letitia quit the soap for a second time last autumn, fearing being typecast.
An insider also revealed that Sharon's 'brother', Dennis, will be returning around the same time.
More: Soaps
Soap Scoop
Emmerdale Rachel, Laurel row - videoWatch a video preview of Monday's Emmerdale episode.
Soaps Interviews
Emmerdale star talks John Barton exitWe chat to James Thornton about his dramatic Emmerdale departure.
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.
