Spoiler if you watch only the anime
I remember that in the manga Roger's journey its only one chapter that ends with Roger finding the One Piece. While in the anime they divided this part in two episodes,and judging from the preview,it seems that next episode will also include the part where Roger's crew disbands. I dont know,i think the moment where Roger finds the One Piece would have worked better as an episode-ending scene,wouldnt be? By the way they decided to do in this way,and the scene will surely be great anyway