Announced on the website, right after Karin's graduation announcement.
Pop Music / Suki tte ii yo (ポップミュージック / 好きって言ってよ]
Karin's last in Juice, Yume and Riai's debut. If you don't count the "new vocal version" of Hitori de.
Also, b-sides make a comeback! Borderline and VA-VA-VOOM will be featured as b-sides on different editions.
A new version of Tsuzuiteiku Story will also be on this single, I guess as a fixed b-side. It's called "Tsuzuiteiku Story (Symphonic Version feat. Karin)".
Limited Edition A: Pop Music MV
Limited Edition B: Suki tte ii yo MV
SP Version: Another version MVs for Pop Music and Suki tte ii yo
Regular A: b-side Borderline
Regular B: b-side VA-VA-VOOM
/EDIT: Pop Music is a cover of KAN's song of the same name that will be released later this month.