In this podcast from Nate the Hate, he says that the Switch 2 was able to run a demo of Breath of the Wild at 4k 60FPS, with instant loading times. It was using DLSS 3.5. He also mentions that The Matrix Awakens demo was running on it. using advanced Ray Tracing. In the end, he says that "March 2024" was heard a couple of times, but without any context, so we don't know if it's the release date, the release window, or the reveal date.