*Possible spoilers obviously*
Kit Harington's character was stabbed and left looking very much dead by his own Night's Watch comrades after he joined forces with the Wildings to help repel and flee the White Walkers at Hardhome last season.
But now, fan site Watchers on the Wall has reason to believe that a huge battle is being filmed in Saintfield, Northern Ireland with "many northern armies fighting including the Umbers, the Boltons, Wildings and more".
Most excitingly, Harington was apparently seen taking part in the shooting and was allegedly spotted in the area with co-star Iwan Rheon, who plays Ramsay, though the site's wording was vague.
Read more: When is Game of Thrones season 6's air date?
Some reports reckon Jon Snow might have 'warged', embodying the mind, of his direwolf Ghost. Others think Melisandre will channel the Lord of Light and revive him so he can lead the northern armies against the Boltons, but really, no-one knows anything.
Both Harington and the showrunners have repeatedly confirmed that Jon Snow is "deader than dead", but the number of sightings are beginning to make this look like a poorly-kept secret, and certainly suggest he is there for more than a simple funeral scene. If Sam Smith can lie through his teeth about not doing the Bond theme, Jon Snow can surely still be alive, right?
Shocking Game of Thrones scenes
Shocking Game of Thrones scenes
1/9 Sansa/Ramsey rape scene
Season 5, episode 6: Fans were outraged as the episode ended with Sansa Stark being brutally raped by her new husband, Ramsey. The camera soon panned to Theon as he watched on, terrified.
2/9 Shireen burns at the stake
Season 5, episode 9:Stannis burns his daughter Shireen at the stake after Red Priestess Melisandre advises him to make a sacrifice to gain more power
3/9 Theon gets his penis chopped off
Season 3, episode 10: While being tortured by Ramsey, Theon Greyjoy goes through all sorts of pain. The most horrible though is when his penis is cut off and then sent to his family.
4/9 George Bush’s head on spike
Season 1, episode 10: According to the directors, they couldn’t get enough prosthetic heads made up for the show and ended up using the spare one’s lying around. One of those just happened to be the fake head of George Bush, which eventually ended up on a spike.
5/9 Joffrey murders two prostitutes
Season 2, episode 4: In one of his most violent moments, Joffrey finds himself with two prostitutes in his room and the most disgusting thing he can think to do with them, uses them as living targets.
6/9 The Red Wedding
Season 3, episode 9: It was the turning point for the entire show. Just as everyone thought it was going the Starks way, they nearly all end up murdered in one of the bloodiest episodes of any TV series ever.
7/9 Rat torture
Season 2, episode 4: Torture is a pretty common occurrence on Game of Thrones, but none were quite a bad as this. In the scene a bucket of rats is put to a man’s chest and then heated up with a flame so they must eat through the man to escape. Terrifying.
8/9 Mountain head explosion
Season 4, episode 8: Just as everything was going Oberyn Martell’s way, it all literally blew up in his face. The warrior ended up looking like a squashed watermelon in one of the most awful scenes in the entire series.
9/9 Theon botched beheading
Season 2, episode 6: Beheadings: In one of the more gruesome beheadings, Theon strikes Ser Rodrick Cassel not just once but four times in the neck, finally taking it all the way off with a kick.
Speculation for season six is particularly rife as the HBO series has now overtaken George RR Martin's A Song of Ice and Fire novels.
It's been a long, long wait for sixth book The Winds of Winter, but earlier this week an editor for Spanish publisher Ediciones Gigamesh, which owns the rights, insisted that it would finally reach shelves sometime in 2016.
Martin, who once promised to have the series completed almost 20 years ago, has been cancelling public appearances and passing up other Thrones projects to focus on finishing it.
Game of Thrones season six is expected to air next April.