Senran Kagura: Estival Versus has been out in Japan (PS4, Vita) since early this year (we're supposed to get it soon). Senran Kagura 2: Deep Crimson's Kagura was just added as a DLC character as seen in the video above. But that's burying the lede.
The 1.15 patch adds a new feature to Estival Versus: the opportunity to kiss the girls in the Locker Room with the "Kiss the Girls" feature. Best moisten up those winter-chapped lips. On the PS4 you can also solicit knowing glances via the camera.