Not long ago there was a post of sketches from someone who allegedly had seen the new gen 8 starters, and consequently he was banned pretty fast. It was really weird so i decided to color in those pokemon and this is what turned out.

Also, the info that was allegedly leaked:
> Pokemon Crown and Pokemon Scepter are NOT the official names of the games (he did not say what are)
> Around 80 to 90 Never before seen pokemon
> 20-30 regional forms
>Around 10 megas
> Meltan
> Melmetal
> Region based in the UK (England primary, historical monuments from Ireland, Wales)
> No new types
> No new Eeveelution
Starters:
> Fire: The sheep pokemon
> Water: the fin Pokemon
> Grass: The hare pokemon
> There are 10 Gym leaders
> Elite Four is back
> Transfer Pokemon Go to Gen 8 possible
> Transfer Let's go to Gen 8 Possible
> Safari Zone back
> New battle interaction with trainers (?)
> Historical monuments play a role in catching Ultra Beasts
> Not sure how many Ultra Beasts
> New Evolution stones
> Customized clothing is back
> Secret techniques are back
> Riding most pokemon is possible post-game
> Catching Legendaries from Kalos post game
I don't know when the pictures for the starters will be released but I will keep you posted.