A big ‘Downton Abbey’ announcement is coming soon – what could it be?

The official Facebook account of Downton Abbey has teased the imminent arrival of “a special announcement.”

After years of rumours, a Downton Abbey movie was officially greenlit earlier this year, but details of when filming will commence and which cast members will return is still uncertain.

There have been rumours that the film could be a prequel set before the TV series, featuring an all-new cast.

Now the hit period drama’s official Facebook page has announced: “Big news is on its way! Check back soon for a special announcement.”

Presumably the news relates to the long-awaited Downton Abbey movie project, although perhaps it could also be a TV revival or spin-off series?

Downton Abbey: The Complete Collection is available to buy now.

Downton star Hugh Bonneville recently revealed that it’s going to be “a tough call to get everyone together” to make a movie.

The 53-year-old English actor, who played Robert Crawley, explained: “I know there’s a lot of good will behind it, but as some of the other cast said, it’s like herding cats.”