#z-moves

Likely:

anouncement about Fire Red and Leaf Green being on the Switch now.

anouncement of gen 10 with the starters and region name

release date anouncement for pokemon champions (wishful thinking here, but I hope its on that day)

More info about Pokopia

Mega Garchomp Z event anounced

Less than likely:

More mega evolutions, gigantamax forms, and pokemon exclusive z-moves get anounced for champions. Specifically megas for samurott, serperior, and typhlosion and maybe a dynamax form for Tyranitar.

Pokemon Winds & Waves is not the title of the Gen 10 games and the entire games themselves are not what we anticipated because after the leak the Pokemon Company immediately decided to rework their entire thought process behind Gen 10 and beyond.

Mega Garchomp Z event comes with Volo making a return to have a boss battle using Mega Garchomp Z in the same way you had to fight Katrina to get Mega Lucarite Z

Very Unlikely:

Zinnia shows up instead of Volo or leads you to Volo given that Garchomp turns into a pure dragon type upon mega evolving. She's a draconid, she loves dragons, makes sense.

Katy's Custom-made Cakes

Call me cliche, but I thought Mega Evolution really was the best (and not just because it added so many dragon types and Mega Absol)! New typings, better stats, different abilities, fantastic designs... Mega Evolution has it all! It helps that it actually lasts the entire battle too.

Terastallization ranks second because of the layers it can add to your strategy and the amount of Confusion Fu your opponent can potentially throw at you. I also enjoyed the fact that, like Mega Evolution, it lasts the entire battle, but isn't restricted to a only a few Pokémon. I also thought the hats/crowns were adorable!

I confess, I didn't much care for Dynamax/Gigantamax, at least initially. I thought the "giant Pokémon" visual was a bit silly and the increased HP just seemed like a knockoff of Mega Evolution's stat boost, only worse because it only lasted three turns. However, I did gain a deep appreciation of Max Moves' extra effects.