HBO’s “House of the Dragon” Season 3 is scheduled to premiere on June 21 on HBO. Multiple outlets report that the first episode will run 72 minutes, citing information attributed to HBO’s official materials. Fox News also reports that the season premiere will begin with a “Battle of the Gullet” opening, described as a notable early sequence in the installment. Newsweek likewise focuses on the runtime disclosure, stating that HBO’s official website appears to confirm the duration for the season’s premiere episode. Together, the reports indicate that the key confirmed details available ahead of release are the June 21 premiere date and a 72-minute length for the first episode. While the “Battle of the Gullet” characterization appears in Fox News’ reporting, both outlets align on the central factual points regarding when the season starts and how long the premiere episode will be. Other specifics about the season’s broader plot and structure are not detailed in the provided excerpts.