Kino Lorber Blu Ray
4K restoration. Also streaming. Review and screenshots.
HD trailer https://www.youtube.com/watch?v=WWS1tt3ydV8
https://www.blu-ray.com/movies/Jazz-on-a-Summers-Day-Blu-ray/273355/
"The Library of Congress named Jazz on a Summer's Day to its National Film Registry in 1999. The Library's National Film Preservation Board funded the IndieCollect restoration in time to celebrate the film's 60th anniversary at the New York Film Festival in 2019. After the restoration was completed, the film elements were placed at the Library of Congress, along with a brand new 4K digital preservation master."