This year's Pokémon anniversary has to bring out the best of and from Pokémon, including as they are identified by the regions they hail from. Pokémon Unite has embraced this idea, and with that, the game created special maps for celebrating the anniversary by bringing out the Pokémon from specific regions. Accordingly, the special maps are called "festival" maps with regard to their celebratory nature of Pokémon in general and the species that are already featured in the game specifically - something that should now be discussed.
Earlier, around the time of the first introduction of the "Legendary Flight" as full-fledged Unite Licenses, the game had the "Kanto Festival" map, which allowed Unite Licenses for Pokémon that hail from that region. Similarly, with the current approaching introduction of the first partner trio from Johto as Unite Licenses, the game now has the "Johto Festival" map, which by implication thus allows Unite Licenses for Pokémon of that very region. Both also come with respective events. The idea is simple, but there's quite a bit more to it than the above.
For these maps, they are played as Casual matches using the latest iteration of Theia Sky Ruins as their base. The wild Pokémon that are present in that map are the same as for the regular version of that map, so they remain as generational "outliers", in a way only "supporting" the actual celebration by what players play. As well, they allow multiple players to choose the same Pokémon, which is evidently currently needed as there are very few Pokémon to use for the Johto Festival map, at least until the first partners fully show up.
Since not all Pokémon from these featured regions have shown up in the game, these maps can definitely stand a chance to be repeated at some point in time, when more of them do show up as Unite Licenses. Furthermore, the two maps as introduced above also provide a base framework for future regional "festival" maps - a Hoenn map comes to mind and may be scintillating to think about, especially since a few Pokémon from the region has shown up. Yet that's only for the future to consider.
It's only natural to consider the regions of particular Pokémon species in featuring them, as that is a non-removable part of their identity. Considering that, Pokémon Unite has a good thing going with the regional "festival" maps to celebrate and play with the Pokémon of select regions, even if the celebration only exists in this specific form. Still, that should be a good thing for this Pokémon anniversary and beyond, as great Pokémon hail from great regions, and both deserve a rightful celebration in their play.
One year ago: Cosplay: Nakama Fest
Two years ago: Cosplay: Community Alliance Meeting
Three years ago: Other Trainers for Legacy Trainer Challenge?
Four years ago: TCG, My Past and Future
Five years ago: Quickies: Trainers as Independent Learners
Six years ago: Resolving Differences
Seven years ago: Pokémon Go Event Rollup, 4/27/2019
Eight years ago: Groups and Sub-Groups
Nine years ago: Out of This World: Episode 690 - "A UFO for Elgyem!"