Two more Legendary Pokémon from the Hoenn region are coming in September 2018. From September 2nd, 2018 until September 29th, 2018, you can receive Latias for your Pokémon Ultra Sun or Pokémon Sun game, or Latios for your Pokémon Ultra Moon or Pokémon Moon game.
United States/Canada/Mexico: Best Buy - September 2nd, 2018 until September 29th, 2018
UK/Ireland/Germany/Spain/France/Italy/Australia: Nintendo Network - September 1st, 2018 until September 23rd, 2018
Chile: Microplay - September 2nd, 2018 until September 29th, 2018
Guatemala: El Duende
Colombia: Alkosto HiperAhorro
Panama: Felix Estigames
Costa Rica: Vertigo
Peru: iToys Store
Honduras: Game Station
How to get Latias or Latios
1. Open your Pokémon Sun, Pokémon Moon, Pokémon Ultra Sun, or Pokémon Ultra Moon game.
2. Select Mystery Gift on the main menu.
3. Select Receive Gift.
4. Select Get with Code/Password, then Yes, then Yes again to connect to the internet.
5. Enter your code.
6. Watch as the Legendary Pokémon arrives in your game!
7. Speak to the delivery person in any Pokémon Center to receive your Legendary Pokémon.
8. Be sure to save your game.
Latias and Latios - Level / Moves:
YouTube Trailer - Latias and Latios Join the Legendary Lineup in September