Idk if anyone did this already but quick list of all the differences between the maps, or at least I spotted besides the colouring of the sea
1- The island is now a lot more barren and has a lot less greenery to it, it dosent seem to be a play of the colouring like in otherplaces but maybe
2- The stones have been removed which restricted surfing
3- Stones have been added to restrict surfing
4-ofc theres the purple swirly thing but also the island has lost some rivers beneath and theres no shining light in the original on the tree
5-Kinda hard to notice but the buildings have considerably changed, mainly the mall
6- new beach area
7- added island in the sea it appears
8-another added plot of land
9-again this could be a design choice but theres no more steam/smoke suggesting the volcano is dormant
10 -the bg island is no longer covered up,might suggest a new mini island
11- Unidentified objects in the water, maybe pokemon, boats or rocks but considering all the other boats are in the same location I’d say its important.
12- New gateway of what looks like the league added to the mountain
13-really hard to see but the plot of land is now a building, suggesting all of them have been built
14- Mountain bulges out more suggesting a expanded cave
15- New trailer on the small beach