It is being speculated that Jason is set to reprise his role as he was seen hanging out with the show's writers in Northern Ireland, near the shooting location of the series.
Maisie Williams, who plays revenge-seeking Arya Stark, teased fans that she has already read the script for the highly-anticipated season. She issued a series of tweets on Monday
Game of Thrones' eighth season will be the last of the series. Meanwhile, Universal Cable Productions has acquired the rights to develop George RR Martin's anthology series Wild Cards
"Now that winter has arrived on Game of Thrones, executive producers David Benioff and D B Weiss felt that the storylines of the next season would be better served by starting production a little later than usual, when the weather is changing," Casey Bloys, President, HBO Programming, said in a statement
"We kind of pushed everything down the line so we could get some grim, grey weather, even in the sunnier places that we shoot," DB Weiss said.
Winter has come - and gone almost as soon as it arrived. Fans now have the arduous task ahead of killing time until Season 7 next year
The finale of Game Of Thrones' latest season had received over 7 million viewers