The recent Pokémon Sword and Pokémon Shield leak has been quite astonishing in its enormity and impact. The games themselves are scheduled for release on November 15 but it now seems the entire Pokédex has been revealed, with 400 Pokémon taking part. However, there are claims that the person behind the leak has been discovered by Nintendo.
https://www.notebookcheck.net/Game-over-Entire-Pokemon-Sword-and-Pokemon-Shield-cast-of-400-Galar-Pokedex-characters-revealed-but-alleged-leaker-may-have-been-nabbed.441222.0.html