Seeing all of those Water type Pokemon preview makes me wonder, are we getting another Alola episode soon? If so, it looks like Chloe might be going with them. We see Dracovish, Dewgong, and Vaporeon going down on the slide, which makes me think Vaporeon could belong to Lana so that people won't confuse the two Eevees. Then you have the random Gorebyss in the ocean, which makes sense for Alola's setting. Then we see Ash and Goh in the snowy setting, which makes me think that it's Mount Lanakila. Goh said a few episodes ago (Psyduck episode) that he was wanting to catch some Ice types. Hopefully this leads to an overdue catching spree for Goh like in the beginning of the series. Perhaps this setting is where Ash could maybe get an Alolan Sandslash? Wishful thinking, I know. He'd have a type he missed out on in Alola, two types he's lacking overall, and a regional form that was introduced in Alola. As for Absol, it was definitely my prediction for his Hoenn representative. He has no Dark types from Hoenn, no pure Dark types at all, and it gives Ash another Pokemon to possibly mega evolve if they go that route for his Lucario.