Well, I did see the ending on YouTube and they did reveal the evolution of Jessie's Pumpkaboo, but they did not show who's capturing who. All they showed was a Noibat and Eevee dancing with everyone's Pokémon.
Hey I counted and there's gonna 9 appearing. I worked out a plan. I'll get Sceptile, Blaziken, rayquaza and groudon while you get Swampert, Salamence, slowbro, and kyogre. We'll finish fast. We may not need get groudon and kyogre, but I like keep options open. There's gonna be a 2nd metagross you want this one or can I get it?