I’m looking at the upcoming Kalos Tour and I’m honestly confused. If we don’t get Shiny Zygarde now, when is it actually happening?

I am assuming Niantic will follow the usual pattern: release the Shiny first (to get everyone raiding/grinding), and then drop the Mega/Complete Form later to milk the hype. But if it’s not for the Tour, do people think it’s going to be a GO Fest headliner?

My questions for the community:

• Is Shiny Zygarde "worth" a GO Fest? Compared to past headliners like Necrozma or the Primals, is just a shiny release enough to carry a whole summer event?
• The Hype Gap: Is it just me, or is the hype for Arceus way lower than for Mega Mewtwo or Ultra Necrozma? I feel like players are way more desperate for the Mewtwo Megas or a 100% IV Zygarde than they are for the "God" of Pokémon.
• Release Order: Do you think they’ll stick it in raids, or is it going to be another "pay-to-win" Masterwork Research like Shiny Shaymin/Meloetta?

I feel like Ultra Necrozma is the only thing that actually competes with the hype of Mega Mewtwo or mega Zygarde.