Morning Musume.'26 will release their new single, currently untitled, on September 9.

The release marks the group's 77th single overall. It will also be the first single for new member Meisa Sugihara, who joined in March, and the final single for Maria Makino and Sakura Oda ahead of their graduations this year.

The single will be available in five different types: Regular A, Regular B, Limited A, Limited B, and Limited SP. Limited editions A and B will include music videos and behind-the-scenes footage, while the SP edition will come with a Blu-ray featuring select footage from the group's 'Morning Musume ’26 Concert Tour Spring - Rays Of Light -' show at Tachikawa Stage Garden in Tokyo.