So really seems like Yamato asked to join, Luffy said something off panel and she stayed in Wano, good.
The next chapter (1057) is the last one of the volume 104, so i believe it will be the end of act 3 and Wano itself.
Hope we got like 1058/59/60 with a tour around the world, seeing Buggy, Sabo, Dragon, Marijoa and Vivi, with the new bouties of some of this characters being show when we see them.
Next chapter could be just a bounty dump for the SH and they just having a good time on the Sunny, always loved those chapters in the pre TS