The official website for Laid-Back Camp announced on November 6, 2026, that Laid-Back Camp Season 4 is scheduled to begin airing in April 2027. It also released a main visual and a main PV featuring three theme songs.
The PV opens with Asaka's opening theme, "Brand New." (ぶらんにゅ。), as Nadeshiko and the outdoor activities club, now a grade higher, plan how to recruit new students, according to an Oricon News report. Eri Sasaki's ending theme, "Happa no Tegami" ("Leaf Letter"), then plays over scenes of the high school lives of new students Ema and Mei. Kiminone's series theme, "Tonari ni Ireba," accompanies scenes of the group camping and of food.
The main visual gathers eight characters at a campsite, including Ema and Mei alongside familiar faces such as Nadeshiko and Rin. Anime News Network reports that Shin Tosaka returns from the third season to direct at FuRyu Pictures.
Oricon News also collected online reactions to the video, translated here. They include "Wait a minute!" and a comment calling it moving that the character designs show everyone having grown a little.