AkiP (otherwise known as Akimoto Yasushi, the general producer of the official ◯◯◯48 groups, has announced that GAGAGA will be released simultaneously in both Japan and Korea. Planning for that, he had a Korean composer work on the song, and also added in the Korean rap section you all heard (or maybe will keep an ear out for now). The concept of the song was "JPOP that's aiming for KPOP".
Well, I'm not sure how well they'll do in Korea (of course I wish them success), and I'm frankly more concerned with how they'll be received in Japan, but good luck with your international debut, SDN48!
Wow, I didn't think I'd be saying "international debut" so soon. XD