There are several players sharing on social networks, Twitch and Discord videos and photos of the game running on the PC via emulation and unlocked Switch models. Many of them are being dropped by Nintendo.
It is not yet known how the copy of the game leaked, but without a doubt it is quite a headache for Nintendo, since the long-awaited game can be played even on the PC.
If you want to avoid story spoilers, the best thing you can do is block everything related to Zelda on social media until the launch, which will take place on May 12.