Metroid Dread updates to version 2.1.0: the three Boss Rush modes are now available - Meristation
Metroid Dread adds multiple Boss Rush modes in a free update - News - Nintendo Official Site
Boss Rush, Wikitroid
Metroid Dread Has a New Boss Rush Mode - IGN
Metroid Dread Has a New Boss Rush Mode - IGN
Metroid Dread Has a New Boss Rush Mode
Metroid Dread Has a New Boss Rush Mode - IGN
Metroid Dread Ver. 2.1.0 patch notes add 3 Boss Rush modes
Boss Rush, Wikitroid
Multiple Boss Rush modes in a free update for Metroid Dread are available now!, News & Updates
Metroid Dread's Second Free Update Is Now Available, Here Are The Full Patch Notes
Boss Rush Mode Now Live In Metroid Dread - News - Nintendo World Report
Metroid Dread Adds Three New Boss Rush Modes In Free Update - Game Informer
Boss Rush, Wikitroid