Wow didn't expect CoroCoro coming out early this month.
But hey, at least we got Necrozma's official reveal! In case if you're wondering who Necrozma is, it was a Pokemon located next to the Ultra Beasts in the National Dex as revealed by the datamines of recent. It's a pure Psychic-type with a new ability called Prism Armor, which weakens super-effective damage taken similar to Solid Rock and Filter.
We also got the official art of the Ultra Beasts Kartana and Celesteela. Kartana is Grass/Steel and Celesteela is Steel/Flying, making these the first Pokemon with these type combinations outside of Skarmory and the Ferroseed line. Definitely loving their designs ever since they were first leaked. They also get an ability called Beast Boost, which is shared between all Ultra Beasts and raises the user's highest stat when it knocks out an opponent.
And we finally get confirmation of the Alola starters' secret! It's... exclusive Z-Moves, which was a bit disappointing especially for being kept secret for so long. Didn't help the datamine spoiled them as well. Decidueye's Z-Move is the Ghost-type Sinister Arrow Raid, Incineroar's Z-Move is the Dark-type Malicious Moonsault, and Primarina's Z-Move is the Water-type Oceanic Operetta. They all only work when the respective signature moves Spirit Shackle, Darkest Lariat and Sparkling Aria are used in battle.