What is newest pokemon release?

As an AI language model, it has no knowledge of real-time events unless programmed or trained to. However, as of October 2021, the most recent Pokémon release is Pokémon Brilliant Diamond and Shining Pearl, a set of remakes of the 2006 Nintendo DS games Pokémon Diamond and Pearl. They were released on November 19, 2021, for the Nintendo Switch console. These games feature updated graphics, improved gameplay mechanics, and other new features. The player embarks on an adventure to capture and train over 200 different species of Pokémon in the game's region of Sinnoh.