A new Destiny 2 raid means a fresh batch of unique weapons and armour to add to your collection, including the elusive raid exotic. Only certain items drop from each encounter, so you'll need The Desert Perpetual loot table to know who drops what, whether you're chasing something specific or just trying to catch 'em all.
Keeping up with the new systems in The Edge of Fate, The Desert Perpetual's raid loot has armour set bonuses, Armour 3.0 stats, and also follows the gear tier system, as perplexing as it is. Outside of the raid loot, chances are you still have some Edge of Fate exotics left to collect as well, like the Graviton Spike handcannon.
