https://wccftech.com/free-metroid-dread-update-2-0-0-dread-mode-rookie-mode/

Nintendo has released a free Metroid Dread Update, adding a brand-new Dread Mode and Rookie Mode to the game.

The arrival of the free update was announced during Nintendo’s Direct broadcast yesterday. In addition to announcing the new difficulty modes, Nintendo also confirmed that Metroid Dread will be receiving another free update this April. This content update will add a Boss Rush mode to the title, allowing players to battle bosses continuously.