User blog:CureLightning/Part 5 announced??

Hi everybody! This is actually my very first blog post. So, the Aikatsu website updated with a banner announcing part 5 of the game. First of all, that was very fast and it doesn't come out until February of next year. I'm very interested since it looks like it'll reveal the next S4. I'm honestly confused about it since Yume, Laura, Mahiru, Ako, and Lilie are on the banner so does that mean they're the next generation or S5? I'm not sure, but feel free to discuss below.

Here's a link to the picture:http://www.aikatsu.com/stars/news/101.php