Spoilers below.House of the Dragon’s third season is taking shape. HBO announced on June 13, 2024—mere days ahead of the season 2 premiere—that season 3 was officially greenlit, and as of March 2025, the show is in production.“George, Ryan, and the rest of our incredible executive producers, cast, and crew have reached new heights with the phenomenal second season of House of the Dragon,” Francesca Orsi, head of HBO Drama Series and Films, said in a statement. “We are in awe of the dragon-sized effort the entire team has put into the creation of a spectacular season two, with a scope and scale that is only rivaled by its heart. We could not be more thrilled to continue the story of House Targaryen and watch this team burn bright again for season three.”Season 2 focused on the beginnings of the civil war within House Targaryen, split between the Greens (pro-Aegon and Alicent Hightower) and the Blacks (pro-Rhaenyra Targaryen). Now that we’re certain the story is moving forward, here’s where the series could go next.Jump to:When will season 3 of House of the Dragon premiere?What will season 3 be about?Who will be in the season 3 cast?Will this be the last season?Can I get a sneak peek?When will season 3 of House of the Dragon premiere?Season 3 will premiere on June 21, 2026.“I think it’ll be just outside of [the 2026 Emmy eligibility window],” HBO’s Casey Bloys previously told Deadline. (That window closes on May 31, 2026.)As Entertainment Weekly reported in 2024, Condal confirmed that his team was working on the third season even before HBO’s renewal announcement. At the time, he was already being mindful of how the show would end. “You certainly don’t want to rush to get to an end, but you also don’t want to overstay your welcome,” Condal told EW. “You want to find this very satisfying place to go out that ties up enough loose ends and leaves others intentionally open because, as we know, this history marches on for another 150 years to Daenerys.”What will season 3 be about?Judging from the season 2 finale, we can expect some major battles in season 3—including one potentially at Harrenhal, where most troops seem to be heading. The Greens have the Lannisters, Hightowers (including Daeron and dragon Tessarion), and the Triarchy fleet; the Blacks have at least six dragons (maybe seven, if Rhaena is able to tame a wild one), the Starks, and the Velaryons. The forces seem bound to clash.But there are a few other loose ends, too: Alicent offers Rhaenyra an easy entry to King’s Landing and Aegon’s life—will she take it? And speaking of Aegon, he and Larys Strong have taken off for Braavos, so season 3 might follow their journey there. Then there’s Otto Hightower, who appeared at the end of season 2 in an undisclosed cell.“While this season was very much about the fits and starts of an early medieval war, season 3 is clearly going to be about total war,” showrunner Ryan Condal said in an Inside the Episode interview after the season 2 finale.“I think Team Black are in ascendancy,” predicted Steve Toussaint (Corlys Velaryon) in the same episode. Emma D’Arcy said that their character, Rhaenyra, now “has the better hand and an inevitably positive shot at the throne.” However, as Tom Glynn-Carney (Aegon Targaryen) added, “The pendulum could swing either way very quickly.”Fire & Blood by George R.R. MartinNow 66% OffCredit: BantamWho will be in the season 3 cast?According to HBO, the season 3 cast will include: Matt Smith (Daemon Targaryen), Emma D’Arcy (Rhaenyra), Olivia Cooke (Alicent Hightower), Rhys Ifans (Otto Hightower), Steve Toussaint (Corlys Velaryon), Fabien Frankel (Ser Criston Cole), Matthew Needham (Larys Strong), Sonoya Mizuno (Mysaria), Tom Glynn-Carney (Aegon Targaryen), Ewan Mitchell (Aemond Targaryen), Harry Collett (Jacaerys Targaryen), Bethany Antonia (Baela Targaryen), Phoebe Campbell (Rhaena Targaryen), Phia Saban (Helaena Targaryen), and Jefferson Hall (Tyland and Jason Lannister), James Norton, Tom Bennett (Ulf), Kieran Bew (Hugh Hammer), Kurt Egyiawan (Grand Maester Orwyle), Freddie Fox (Ser Gwayne Hightower), Clinton Liberty (Addam of Hull), Gayle Rankin (Alys Rivers), and Abubakar Salim (Alyn of Hull).In early 2025, Variety and The Wrap reported new casting for season 3: James Norton as Ormund Hightower, a character who’s been mentioned in previous seasons of the show without making any on-screen appearances; Tommy Flanagan as Ser Roderick Dustin; and Dan Fogler as Ser Torrhen Manderly.Will this be the last season?No, but the series is likely set to end with season 4. When The Hollywood Reporter asked in 2024 if the show would run for five seasons, Condal responded, “No, I think it’s four.” However, HBO did not confirm this news during a November 2025 presentation.Can I get a sneak peek?Yes, on Nov. 20, 2025, HBO shared two first-look photos of season 3, featuring Rhaenyra holding a crown and Daemon marching into battle.HBOHBOOn Dec. 12, 2025, HBO unveiled additional images, featuring shots of Alicent, Rhaenyra, Lord Corlys, and a first look at James Norton as Ormund Hightower.Nye Caple//HBONye Caple//HBONye Caple//HBONye Caple//HBONye Caple//HBONye Caple//HBOThe network also released a first look at its 2026 slate, which included brief clips from season 3, including a few intense battle scenes.View full post on YouTubeThe official trailer for House of the Dragon season 3 arrived on Feb. 19, 2026. The clip teases a war and the possibility of Rhaenyra ascending the throne. “You are the queen of dragons. You have an absolute power in your grasp. This is the moment you become queen,” Daemon says throughout the trailer.Watch it below:View full post on YouTubeHBO also shared a handful of new sneak-peek photos from the upcoming season.HBOHBOHBOHBOHBOHBOAnother teaser arrived on April 27 and offers a look at the mounting tensions this coming season. “You will have an empire unassailable, Rhaenyra. And our children will rule it forever and a day,” Daemon tells Rhaenyra in the clip.“All that remains is for you to decide what you want from this war,” Corlys Velaryon says ominously, while Alicent Hightower says in a separate moment, “You will do things that your heart would have recoiled from before you came to the throne.”View full post on YouTubeThis story will be updated.Additional reporting by Starr Bowenbank.Watch House of the Dragon on Max