For a while I had assumed that the reason why they had not released Fancy and Pokeball Vivillon was because they were saving them as future Go Fest exclusives, but it would make more sense to release them during next year's Kalos Tour 2026.
Then it struck me. Minior has 7 forms which they could milk until the end of times. This would explain even more why it still has not been released. Otherwise, Minior could be made into a regional, but how could they go about it. I have heard of the possibility of one for each continent, but we would have to count the Americas as North, Central and South for that to count; I'd doubt they put one in Antartica. Or they could do something like with Flabébé.
However, they can still continue to use Rotom by releasing their shinies, like they did with Unown in the past. Time will tell, I suppose.
by Compte_2