XDefiant Y1S1.0 patch notes finally brings us to Season 1

XDefiant Season 1 update and Y1S1.0 patch notes

Gameplay

Changed the expiration timing of activated Boosters so their lifespan counts down only during match time, when you're actually playing.
Lowered the XP threshold for each Battle Pass tier to give Battle Pass progression a little more pep.
Tuned Match Bonus XP rewards. 
MVP and Victory went from 2,000 to 1,000 XP. 
Draw went from 1,000 to 500. 
Completion doubled from 2,000 to 4,000.
Answered a community ask to add a headshot icon to the Killfeed.

Factions

Added the GSK faction and their no-nonsense announcer: HQ.
These elite Team Rainbow operators from Germany's Border Protection Command specialize in crowd control and securing territory. They can deploy electrified barbed wire for area denial, counter incoming enemy devices with their Active Defense System, and dazzle multiple foes with flash charges mounted on their G52-Tactical Shield ultra.
Increased the cooldown of Echelon's Intel Suit from 30 to 40 seconds.
Tuned the cooldown of the Phantoms' Mag Barrier from 30 to 40 seconds. Mag Barrier hit points were also reduced from 500 to 400.
The Phantoms' AEGIS now takes damage from EMP grenades (lob six to put it out of commission).
DedSec Hijack cooldown decreased from 28 seconds (plus the remaining duration of  the hacked skill) to 20 seconds (plus the remaining duration of  the hacked skill).
For example, let's say a Mag Barrier has 7 seconds left and gets hacked: The cooldown becomes 20 plus 7 seconds. Failed Hijack cooldown, meanwhile, decreases from 8 to 5 seconds.
DedSec's Spiderbot cooldown increased from 25 to 40 seconds.
Adjusted Spiderbot behavior so multiple Spiderbots won't attempt to hug the same face, nor will Spiderbots continue to ignore faces they've hugged multiple recent times. Some give and take from the Spiderbot kingdom.
Decreased the cooldown of Libertad's BioVida Boost from 25 to 20 seconds. 
Fixed Libertad's Medico Supremo so it will no longer disappear after the deploying player respawns as a different faction.

Maps

Added the new Clubhouse map, a two-story hangout popular with international operators. Ideal for firefights in the short- to mid-range. Home to game modes Domination, Occupy, Hot Shot, and the new CTF.

Game Modes

Added Capture the Flag.

Weapons

Improved the hit flinch penalty incurred when being shot with a sniper rifle equipped.
The speed of the hit flinch camera transition has been increased by 25 percent.
The camera will now always kick upward rather than up or down at random.
The amount the camera will kick left or right has been increased by 3 times.
Added the L115 sniper rifle.
Not quite as heavy as the TAC-50 and has faster handling, although it deals slightly less damage and is not as effective at penetrating cover.
Added the LVOA-C.
A snazzy customized rifle similar to the M4A1. It has a much faster rate of fire than the M4A1, but with that comes more recoil and less range. It also has slightly longer reload and equip times. 
Added the Sawed Off secondary weapon.
This close-range version of the double-barreled shotgun packs a big boom for its size. Imagine carrying a primary weapon in your secondary slot and that's this.
Added new Mastery skins.
Titanium Violet (unlocked at Weapon Level 300)
Titanium Azure (unlocked at 350)
Titanium Prisma (unlocked at 400). 
Fixed weapons and optics shake in first-person view while using ADS.

Devices

Added a new and improved visual effect for the flash grenade.
Removed an exploit where players could respawn with multiple devices after fiddling with the "Copy Loadout" option in the lobby.

Social

Added the Creator Code program, which allows players to choose a creator to receive commissions from their XCoin purchases at no additional cost. Choose "Support a Creator" from the store to see a list of eligible creators.
Players were able to create a party with enemy players and voice chat during matches despite being on opposing teams, which seemed shady, so that's fixed.
Disabled whispers in text chat.

Audio

Tweaked the mix of in-game voices and sound effects for volume and clarity.

Miscellaneous

Players who participated in the Closed Beta were supposed to keep Kersey's Dungaree skin. They didn't, but now they do.
Fixed Challenge-tracking issues with Ubisoft Connect. 
Graphical and audio fixes, various.
Additional crash fixes.