While the Back to Hogwarts livestream event did not feature a new trailer for HBO's Harry Potter, it did have a small teaser for the series. It did confirm that the new trailer will be released on September 02, 2026. Most of the teaser is focused on Harry before his first quidditch match against the Slytherins. After that, the teaser reveals that a new trailer will be released this Wednesday.Thus, even though some fans are disappointed at the lack of a new trailer, after a 59-minute livestream, there is at least a clear timeline as to when we are getting a new trailer for the HBO series.What can we expect from the New Harry Potter trailer? View this post on Instagram Instagram PostThe teaser begins with the students of Hogwarts in a celebratory mood. Then, the scene cuts to them cheering for Harry from the bleachers, including Ron and Hermione. It ultimately ends with the Gryffindor Quidditch team hyping itself in the changing room. The entire new teaser is focused on the morning of Harry's first Quidditch match.We can expect the new Harry Potter trailer, which is releasing tomorrow, to include scenes from the Quidditch match. Other than that, the first trailer could also give us glimpses of day-to-day life at Hogwarts, Norbert the dragon, and the troll that attacks the school on Halloween.Moreover, the trailer could further confirm the release date for the HBO series, as the teaser just revealed that the series will be released this Christmas without a particular date. Thus, the new trailer might confirm the exact release date for the HBO Potter series.What can we expect from the first season? View this post on Instagram Instagram PostThe first season will be adapting the first book of the book series, Philosopher's Stone. Like the book, the first season will be set in 1991, and the seventh season will end in 1998. Each season will adapt one book, and thus, season 1 will follow the Golden Trio, Harry, Ron, and Hermione's attempts to protect the Philosopher's Stone from a dark force trying to steal it. The official logline of this season reads:"There is nothing special about Harry Potter - at least that's what his Aunt Petunia always says. On his 11th birthday, a letter of admittance to Hogwarts School of Witchcraft and Wizardry opens up a hidden world for Harry: one of fun, friendship and magic. But with this new adventure comes great risk as Harry is forced to face a dangerous enemy from his past."Consisting of eight episodes, the series finale is not the end of the HBO show, as season 2 is supposedly filming currently. Considering that the production team is already filming the second season, it seems that HBO is committing to adapting all seven books of the Potter franchise, with many believing that the final book, Deathly Hallows, will begin airing on HBO sometime in 2036 or 2037.If HBO manages to adapt all seven books of this franchise, this would be the second live-action adaptation of the Harry Potter books, after the beloved eight-movie series, which were released between 2001 and 2011.