I interpreted it differently, I read it that we will get an update on Onigashima island which is flying with Kaido's power, and we may get an update on the island reaching closer to the place Kaido wants to drop it on...
So, I did not interpret it in a way that the chapter talks about other events in Onigashima, rather on Onigashima island itself, thus we will have more focus on Kaido in rooftop telling them his plans to drop the island on civilians thus driving Luffy mad crazy
I could be wrong