Multiple outlets report that “House of the Dragon” returns for its third season with the premiere of Episode 1 on June 21. The new episode is scheduled to be available through HBO and HBO Max, depending on viewers’ subscription and regional access. TechRadar and Newsweek both provide release-date and viewing guidance, focusing on when the first episode drops and where audiences can watch. While the coverage is primarily informational rather than critical, the shared details indicate a synchronized launch for the season’s opening episode. No additional plot specifics or cast changes are included in the provided summaries, and the reporting does not mention alternative air times beyond the June 21 premiere date. Overall, the sources agree on the timing and availability of the first episode for the start of Season 3, with both emphasizing how viewers can access the episode on HBO’s streaming platforms.