By the way, to the people who are disappointed with the chapter because Jinbe didn't directly accept nor decline - well, if he actually does join the crew, it's sort of like Brook and Chopper. He did say he would love to travel with them - just like Brook who initially accepted, but couldn't because he lacked a shadow, and Chopper who wanted see the world, but was afraid that he wouldn't fit in because he was a "monster".
Again, not saying that Jinbe will join (as I stated a thousand times before, I don't really want him to either), but I'd prefer persons like him, Brook and Chopper who actually want to become pirates, but can't - unlike Zoro, who didn't want to make himself a criminal, Nami who hated pirates, Franky who simply didn't want to be a pirate, and Sanji who was a mix of Jinbe and Franky, wasn't wanting to be a pirates AND felt he had a debt to Baratie.
I like it more when it's some concrete and palpable problem that can be solved through action instead of people who need personal convincing - it can be a bit wearisome seeing Luffy ask them again and again.
So yeah, if he does join the crew, it'll probably follow a similar formula like Brook or Sanji and happen before the arc ends. Not anytime in the New World.