All roads pointed towards Destiny bringing back old raids to Year 3, and that has been confirmed by the game's developer Bungie in a stream reveal for Destiny's next (and last) live event called Age of Triumph.
As announced on stream, Vault of Glass, Crota's End, and King's Fall will all return with a 390 Light Hard Mode, bringing it to parity with the Wrath of the Machine raid. In addition to the increased Light level, the raids will also feature new Challenge Modes.
Two of those Challenge Modes were confirmed to be Templar Challenge and Atheon Challenge, and it is likely that Crota's End will have two as well. There are currently five Challenge Modes in the game between King's Fall and Wrath of the Machine, and the Age of Triumph record book showed nine total. Taking the new Vault of Glass Challenge Modes into account, it's likely that the last two belong to Crota's End.
King's Fall was the first raid to feature the idea of Challenge Modes, which carried into Wrath of the Machine as well. So, this addition will bring the older Vault of Glass and Crota's End raid up to what fans of Destiny's raids have come to expect from the endgame activity.
In addition to Challenge Modes being added to the old raids, Bungie also previewed details about small design changes that have been made to the raids. The developer said it was important to its designers not to change the raids in a huge way, but there were certain places where it helped make the raids better. While Bungie said it will leave it up to the players to figure out all the changes, a few of them were discussed.
Most of the changes appear to get rid of "cheese" spots or patch methods that players have discovered to get through an encounter in a way that was unintended. This includes the Oracles section in the Vault of Glass, which players could complete by staying up on the ledge above the area and snipe the Oracles. That has been patched, as has the length of that fight, which felt long in places. Also in the Vault of Glass, players will no longer be able to bypass the jumping puzzle using the ledge jump that has become ubiquitous with fans.
The new raids, starting with Crota's End, will hit Destiny when Age of Triumph begins on March 28, 2017.
Destiny: Rise of Iron is available now on PS4 and Xbox One.