The last chapter of One Piece saw Jinbe's potential limb loss for leaving Big Mom's crew, and Luffy's crew arrive at the Wholecake Island.
Recapping 830, Jinbe expressed his desire to leave Big Mom's crew to join Straw Hat's crew. Despite granting his wish, Big Mom demanding some kind of trade be made through a 'Roulette' game.
At the same time, Pedro was setting up a plan with Luffy to steal Big Mom's "Road Poneglyph" because it will be useful to him in the future.
Based on the flow of the story, it seems that upon Luffy's arrival on the island, he will go straight to the Wholecake castle where Big Mom's resides. There he will meet Big Mom's crews and a fight breaks out.
At the same time, while Jinbe is playing the 'Roulette' game with Big Mom, her crew disrupts to notify her that the Straw Hat's crew is attacking her base in order to take Sanji back, thus postponing the "game."
Another storyline that could come into play is Pedro sneaking into Big Mom's castle to steal her "Road Poneglyph." Will he encounter Big Mom's crew who is guarding the place and cause a fight to break out?