Pokemon Winds and Waves were just announced today during the Pokemon Day direct, and the three starters that were revealed align with a previous leak that covers much more of Gen 10. Pokemon Winds and Waves were leaked quite early due to the so-called TeraLeak, including their working titles, but the documents didn't include a lot about the games, and several details may have changed or have been scrapped over time. One of the more recent leaks suggested that Gen 10 would feature a Rotom Scooter for traversal, and it could very well be the oval device the protagonists revealed today have in their backpacks.
There were even recent leaks surrounding Pokemon Winds and Waves' starters, describing one with a big brow and little feet, one that looked like a dessert and with its tongue sticking out, and one that looked like slime. These descriptions are very close to the actual appearance of Browt, Pombon, and Gecqua, so there is a chance that the trailer got out earlier to some people. Either way, the most recent leak included the real-world species of the Gen 10 starters, matching them, alongside various other details about Pokemon Winds and Waves' pocket monsters...
