“We’ve heard from the community that both of these plans aren’t working. The Prestige Raid was a novel experience that players value, even if they don’t own Curse of Osiris, and it was a mistake to move that experience out of reach. Throughout the lifetime of the Destiny Franchise, Trials has always required that players owned the latest Expansion. However, for Destiny 2, Trials of The Nine launched as part of the main game, so it’s not right for us to remove access to it. To make matters worse, our team overlooked the fact that both of these mistakes disabled Trophies and Achievements for Destiny 2. This was an unacceptable lapse on our part, and we can understand the frustration it has created.”
The proposed changes generate issues of their since they mean downtuning content that was meant to provide a level-appropriate challenge for the new level cap in Curse of Osiris.
This is why most games with a new level cap focus on providing new content focused on that level cap, for the record.
Prestige Nightfall is remaining at the new power cap, but the prestige raid is getting its power dropped back down, and regular Nightfall will be available to all except for specific weekly events that require Curse of Osiris. Trials of the Nine will also be available to all unless it features a Curse of Osiris-specific map. Some of these changes will be rolled out on December 12th, with others taking a bit longer to arrive; the important thing is that change is indeed coming.