The first images from CoroCoro have leaked and have revealed the latest news on Sun & Moon. As always, do note that translations are preliminary while we work on them. In the first image, we see Alolan Grimer, which is Poison/Dark-type .

From the same source, but currently without pictures so it’s unconfirmed, Jangmo-o’s evolution is in the magazine, and is Dragon/Fighting-type, and that Type: Null it evolves into a Pokémon called Shiruvadi (シルヴァディ) and that either Null or its evolution change type based on items it holds. We’ll bring confirmation of this as and when it comes so keep checking back.

Source: Serebii