https://www.gamespot.com/articles/destiny-2-leviathan-raid-prestige-mode-coming-next/1100-6453827/

Destiny 2's Leviathan raid is already pretty challenging. If you want even more of a challenge, Bungie has some good news today. The raid's hard mode, Prestige, will become available on Tuesday, October 10 at 10 AM PT after the weekly reset.

Bungie says you may not be able to beat the raid at this super-difficult level. "We do not expect everyone to be successful in completing this activity. Mechanical changes to the encounters are minimal, but they are there," Bungie said. The overall goal for the Prestige difficulty is to put players into a "more punishing sandbox" and challenge you to master the ins and outs of it.