HBO releases the full final trailer for “House of the Dragon” Season 3, which premieres June 21. Across the trailer coverage, outlets describe a ramp-up to large-scale conflict in Westeros, framed as fallout from the ongoing Targaryen civil war and the expansion of dragon-led warfare. One focus is the season-opening Battle of the Gullet, a major set piece shown in the material, with reports highlighting brutal, full-scale fighting. The trailer also depicts Rhaenyra Targaryen taking action toward major political and military gains, including seizing or “taking back” King’s Landing. Digital Trends specifically notes that the trailer shows Rhaenyra having taken King’s Landing, while other outlets emphasize that victory does not resolve the broader turmoil. Several sources point to continuing threats and complications, including plots and betrayal, suggesting that while dragonpower and battles drive the story, internal conflict and shifting alliances remain central. Overall, the reports characterize the Season 3 trailer as a preview of intensified war, major battle sequences, and consequential changes in the balance of power.