I just came back from World Hobby Fair Pokemon event and I found some new information regarding Sun and Moon games.

As some anons have said,
>Grubbin has 2 evolutions
>Yungoos has 1 evolution

And some new information
>Nekkoara is named as Napala in English
>Napala has 1 evolution
>Iwanko is named as Ropup
>Ropup has 2 evolutions and a "Mega" evolution, hence why Ropup and the Starters have something special.
>Napala and Ropup will be announced officially for the world in July 1.

And that's it. Also, pic unrelated.