You also get Celebi in Ultra Moon and Sun if you buy Gold and Silver. After taking over the Legendary Pokemon Solgaleo in Pokemon Ultra Sun or the Legendary Pokemon Lunala in Pokemon Ultra Moon, Necrozma becomes Dusk Mane Necrozma or Dawn Wings Necrozma! Details about these mysterious beings will be unveiled later.
The pair of games will launch for 3DS on November 17. This is the new-model 2DS, not the original version.
The Dusk Form of Lycanroc will get an exclusive Z-move called Splintered Stormshards. Oh, and if you're in Japan, you get arguably the better option: A Pikachu edition of the 2DS XL instead.
Nintendo is also prepping a limited-edition New Nintendo 2DS XL, due out November 3. If you purchase and download the digital version of the games by January 10, you'll get 12 Quick Balls. Nintendo also revealed that the classic Game Boy games Pokémon Gold and Silver will be making their way to the 3DS's virtual console.