I guess that's it, then. The Arcobaleno should appear next chapter, and they'll probably go back to the Present in a chapter or so, after a chapter of saying Goodbye to the future people. Maybe we'll even get to see Future Tsuna.
Next up, though, I want Reborn to come clean and explain what the hell the Pacifiers are all about. If you've watched the Arcobaleno Anime Arc, they all but explained it. Hell, we even got to see the moment they got changed, but not what changed them or why. We also got to find out that Reborn is not his real name (Luce called him Hitman-san, everyone else didn't address him).
So, yeah, Amano. Time to tie up some loose ends.