Game of Thrones' season finale may contain a significant moment fans of the books have been clamoring for.

On Tuesday, the show released a description for Sunday's Episode 8, "No One," which is extremely vague.

"While Jaime (Nikolaj Coster-Waldau) weighs his options, Cersei (Lena Headey) answers a request. Tyrion's (Peter Dinklage) plans bear fruit. Arya (Maisie Williams) faces a new test."

Jaime is probably weighing whether to take on the Blackfish at Riverrun, or siege the castle, sure. But what request is Cersei answering? Which of Tyrion's plans bear fruit? And is that a pun on Arya's run-in with the Many Faced God? We don't have to wait too long to find out...

However, a leaked description for Game of Thrones' June 26 finale holds a potential bombshell. According to Heavy, Season 6's final episode is titled "Winds of Winter" and is summarized thusly:

"A queen comes forth. Euron (Pilou Asbaek) reveals himself. Brienne (Gwendoline Christie) meets a friend turned foe. King's Landing awaits justice. The Night's Watch gathers."

Upon reading this, book readers everywhere must be salivating in anticipation because there's only one probable person Brienne's "friend turned foe" could be, if this leaked description is, in fact, accurate. [Book spoilers from here on out.]

Michelle Fairley, <em>Game of Thrones</em>Michelle Fairley, Game of Thrones

After Catelyn Stark's (Michelle Fairley) death at the Red Wedding, Beric Dondarrion (Richard Dormer) gives his life to resurrect hers in A Storm of Swords. However, the revived Catelyn, known as Lady Stoneheart, is so consumed by her desire for vengeance that she leads the Brotherhood Without Banners in a merciless persecution of anyone she considers a possible collaborator with the Lannisters, Freys or Boltons.

While leading the Brotherhood, Lady Stoneheart encounters Brienne, who is still carrying Jaime Lannister's sword Oathkeeper, which was forged from Ned Stark's (Sean Bean) blade Ice. Lady Stoneheart refuses to believe Brienne is still faithful to her and proceeds to hang her and Pod.

The game is over on Game of Thrones

The alleged episode description, combined with the fact that Fairley was spotted in Belfast last fall, seems to tentatively confirm that Lady Stoneheart is in fact happening this year. And while this is incredibly exciting for those of us who've been waiting years to see Zombie Catelyn Stark, it's bad news for our favorite buddy comedy, The Brienne and Pod Show.

Then again, A Feast for Crows doesn't show Brienne and Pod's actual death, but merely shows them in the process of dying. So until it's proven otherwise, we can cling to the hope that someone saves one or both of them before it's too late.

But Lady Stoneheart's return is far from the only exciting thing the finale summary reveals. Check out our rundown of what else the supposed description for "The Winds of Winter" reveals:

"A queen comes forth:" After six seasons across the Narrow Sea, will Daenerys finally arrive in Westeros? If so, we're sure her first stop is Dorne. Not only is that the southern-most kingdom, but Ellaria and the Sand Snakes would be the perfect allies for Daenerys' anti-Lannister war.

Game of Thrones: Here's what Sansa's letter said

"Euron reveals himself:" Although Varys claims the slavers are funding the Sons of the Harpy (a "fact" he divined off-screen), the slavers say otherwise. And oddly enough, we believe them. If the slavers truly wanted Dany out of Meereen, why would they burn all of her ships, thus making it harder for her to leave?

What makes way more sense is if Euron revealed himself to be behind the clandestine organization. He's spent years sailing around the world, including Slaver's Bay, and destroying Dany's ships would provide the perfect leverage for him to forge an alliance with the Dragon Queen. This would also explain how Euron knows Daenerys needs exactly 1,000 ships, because that coincidence is far too glaring to be ignored.

"King's Landing awaits justice:" This almost certainly refers to Cersei's trial, and there's no way both Cersei and the High Sparrow are coming out of this one alive. If Bran's vision of a wildfire explosion proves true, we're betting Cersei renders her justice by fire and blood.

"The Night's Watch gathers:" Has winter finally arrived at the Wall? The Night's Watch may be gathering to prepare for an impending attack by the White Walkers - or even the destruction of the Wall itself. If Bran, who was marked by the Night's King, arrives at Castle Black, he might unwittingly break the Wall's magic, which protects it from the White Walkers.

What do you think of the leaked finale description? Do you think Lady Stoneheart will finally appear?