Gen 8 will include regional variants.They will be linked to a stat so you will only ever see the same ones
Screencap this.
>>33304420
Or your actual location, like Vivillon.
Would be cool to see a regional variant of Paras and Parasect where the spore didn't take over their bodies.
I'm holding out on sinnoh forms for the gen 4 remakes. If the games are using the same dex as in platinum then they have a lot of options for Pokémon to get new forms