I don't know if it's real or not, but supposedly sega accidentally posted the next two bait banners, and it seems that the SMT heroes are returning, as well as the big banner with all the units from previous year that just ended a few days ago.
https://d2r-sim.d2megaten.com/socialsv/webview/StepGachaRateView.do?gacha_id=7204735&lang=0
https://d2r-sim.d2megaten.com/socialsv/webview/StepGachaRateView.do?gacha_id=7204718&lang=0