The third and final season of "The Summer I Turned Pretty" is set to premiere on July 16, 2025, exclusively on Amazon Prime Video. The season will feature a weekly episode rollout, with the first two episodes premiering together, followed by new episodes every Wednesday. The series stars Lola Tung, Christopher Briney, and Gavin Casalegno, who have reflected on their experiences portraying their characters over the three seasons. Lola Tung highlighted the evolution of her character, Belly, emphasizing the expansion of her relationships, including a deeper connection with herself. Fans can expect some deviations from the original book series, as the final season will not follow the books exactly. Additionally, the soundtrack includes multiple Taylor Swift songs, with predictions about new music featured in the upcoming episodes. The cast has acknowledged that some fans may be heartbroken by Belly's final choice. A new promotional poster for the season was released ahead of the premiere.