The episodes of "The Summer I Turned Pretty" Season 3 (TSITP) are released weekly on Wednesdays at 3 a.m. ET (12 a.m. PT) on Prime Video. The season premiered on July 16, 2025, with the first two episodes. After that, new episodes come out one per week. Specifically:

• Episode 7 is released on August 20, 2025
• Episode 8 will come out on August 27, 2025
• The season has a total of 11 episodes
• The final episode (Episode 11) will be released on September 17, 2025

So the next episode after today (August 22, 2025) would be Episode 8, released on Wednesday, August 27, 2025, at 3 a.m. ET / 12 a.m. PT.