Destiny 2's next expansion will double the improved weapon perks when it launches on June 4. The Final Shape will let players level up older Raid adepts, upcoming weapons, and even ritual weapons, Bungie confirmed today, including loot from the past, present, and future.
DOUBLE Exotic Class Items, Titan BUFFS & 120 Scout BUFF (Update 8.0.5) | Destiny 2 The Final Shape
"In The Final Shape, all new weapons will either be craftable or have access to weapon enhancements," Bungie said in a blog post. This obviously includes future drops, but the developer will be expanding enhancement options for a litany of pre-existing weapons from multiple playlists.
The long list includes drops from Into the Light, Ritual playlists (and their pinnacle modes), Guardian Games, Prophecy, and raid Adepts from Vow of the Disciple and King's Fall. Gear from Nightfalls, Competitive, Iron Banner, and Trials of Osiris may also receive improved properties where applicable.
In general, the retroactive list only includes weapons that are active drops and not in the Legacy Focusing option with their respective vendor. The base cutoff for these weapons is Destiny 2's Season 17 (Season of the Haunted), so drops from before then may not have access to the improved traits.