Even with the game undergoing maintenance until 4pm PT/7pm ET today, Bungie has released Destiny update 2.4.0 on PlayStation 4 and Xbox One, which can be pre-downloaded right now but can’t be played until the game is back online. Reportedly weighing in at 12GB – 14GB, depending on your console, update 2.4.0 preps for Rise of Iron, alters the Sandbox, changes the player experience, and more, as you can see in the patch notes:

Weapons
Read our detailed review of weapon change philosophies.
Auto Rifles

Reduced the maximum magazine size for highest rate of fire auto family (all weapons in the Doctrine of Passing family)
Increased damage to middle rate of fire Auto Rifles by 1.5%

Pulse Rifles

Increased rate of fire for Häkke pulse rifle Lyudmila-D Increased damage for middle rate of fire family pulses (Nirwen’s Mercy) by 2%

Hand Cannons

Fixed an issue where the hand cannon Zaouli’s Bane’s rate of fire stat would display incorrectly
Fixed an issue where the Taken King Vanguard and Armsday Hand Cannons (Down and Doubt 00-0, Kumakatok HC4) stats would display incorrectly

Shotguns

Immobius: decreased spread on Titan class Shotgun (0.1 zoom factor increase), increased base stability (60% increase)
Increased high rate of fire and middle-low rate of fire Shotgun damages by 2%
Reduced spread angle penalty on Shotguns with the perk Full Auto, Invective was not affected

Sniper Rifles

Reduced damage on the middle-high impact (1000-Yard Stare family...