I speak for myself, but I'm glad they're adding What is LOVE to this single. I think it was released for that J-MELO thing, but as far as I know, it had no physical or even digital release, so I want to hear it in a studio version.
I suppose with the trend Hello!Project is following of releasing double singles for all their groups, that a triple A-side single was kinda expected lol I mean, Juice=Juice already did one