Via [url=https://blog.counter-strike.net/index.php/2019/03/23488/]the CS:GO blog[/url]:

[quote=Valve][GAMEPLAY]
Adjusted round loss bonuses with the goal of reducing a negative feedback loop following streaks of losses.
– Round loss bonuses are now based on the count of a team’s round losses. The count increases by one after every loss, and decreases by one after every win (minimum 0).
— With 0 Losses: $1400
— With 1 Loss: $1900
— With 2 Losses: $2400
— With 3 Losses: $2900
— With 4+ Losses: $3400
– Previously, a win would reset the round loss bonus. Now, a win reduces the loss counter by one.
– Teams still begin the half with a loss count of 1.
– This is enabled by default and can be controlled using the mp_consecutive_loss_aversion server setting.
– The round loss bonus is still limited to mp_consecutive_loss_max multiplied by cash_team_winner_bonus_consecutive_rounds.

– Added flashbang assists for players who successfully flash an enemy which then gets killed by another player. Players who threw the flashbang will get an assist callout in the death notice. However if another player inflicted >40 damage to the victim for the assist, the flashbang assist player will not get the callout.

– AUG
— Now that players have had an opportunity to learn to love the AUG, returning the weapon to its original price of $3300.
– M4A1-S
— The M4A1-S now holds 25 bullets in the magazine, and has 75 in reserve.
– Shotguns
— Price reduction for some shotguns: Nova ($1050), Sawed-Off ($1100), Mag7 ($1300).
— Nova penetration increased to 1.
— Sawed-Off range increased to 1400.
— Single shell shotguns in the middle of their reload sequence will no longer automatically continue to reload after a player holsters and deploys them.
– Fixed a bug that prevented C4 or enemies seen through open doors from showing up on the radar.
– Fixed a rare bug where a C4 bomb reset trigger could reset the bomb to a position that was not on the ground.

[PRISMA CASE]
– Introducing the Prisma Case, featuring 17 community-designed weapon finishes, and the Horizon Knives in Chroma finishes as rare special items.

[ MISC ]
– New Loadout Shuffle feature is available in the inventory. Choose to shuffle any number of your weapons or music kits and a random one will be equipped each map.
– Several fixes for the ‘Clean Names’ communication setting.
– Renamed workshop workbench setting to ‘Side View’.
– Removed visual artifacts on a few image assets.

[ MAPS ]

Canals:
– reduced number of routes around bombsite B
– moved bombsite B inside the palace
– added a door from center stairs to courtyard platform
– made it possible to jump up to B bridge from scaffold
– new radar map style

Vertigo:
– Thank you to all the diligent players that continued testing Bombsite B
– Blocked runboost from T spawn to Bombsite B (will still be possible in B site configuration)
– Obstructed boost from top of floodlight in back of A
– Changed layout of back of A site, made entrance onto site a regular doorway, added half-wall in front of scaffolding
– Added usable door in mid towards bombsite B
– Simplified collision model of support jack
– Fixed unintended boost on scaffolding on A ramp
– Made boostable concrete mold by A site slightly larger
– Improved clipping inside elevator shaft

Community maps:
– Updated radar for Abbey and Biome[/quote]

Rumor has it:

- Here are descriptions and flavor text for Prisma Case items:

- FAMAS Crypsis: "It has been spray painted with a randomized insect pattern in autumn colors. [i]Take a second look[/i]"
- AK-47 Uncharted: "A custom paint job of various tribal patterns has been applied. [i]We share the same canoe[/i]"
- Five-SeveN Angry Mob: "A brightly colored paint job inspired by street art has been applied. [i]"Inside voices, please"[/i] "
- AWP Atheris: "A striking green and blue bush viper has been hand painted over a black base. [i]As deadly as it is beautiful[/i]
- Tec-9 Bamboozle: "A custom bamboo paint job has been applied. [i]Don't be deceived[/i]"
- MAC-10 Whitefish: "Fish scales, bones, and hooks have been hand painted in white over a black base. [i]Catch and decease[/i]"
- Desert Eagle Light Rail: "Its custom paint job creates an optical illusion and appears to change the weapon's geometry. [i]Required power supply sold separately[/i]"
- Galil AR Akoben: "A rust-colored pattern has been spray painted over a white base. [i]Your personal battle cry[/i]"
- R8 Revolver Skull Crusher: "It has been hand painted with yellow flames and red and white accents. [i]"Open wiiiiide"[/i] "
- M4A4 Emperor: "It has been custom painted using the Emperor tarot card as inspiration. [i]Lead with your head, even if it means ignoring your heart[/i]"
- AUG Momentum: "It has been custom painted with bright colors and forward facing arrows. [i]Always moving forward[/i]"
- MP5-SD Gauss: "It has been custom painted to look like it was assembled from pieces of stamped steel. [i]Lovingly referred to as the "SpaceGat 2000"[/i] "
- MP7 Mischief: "A concerning black and white smile has been painted atop a red base. [i]Up to no good[/i]"
- P250 Verdigris: "The green drips are the result of its copper base being exposed to the elements. [i]From the air you breathe[/i]"
- P90 Off World: "It has been hand painted with multiple coats of blue paint; even more than last time. [i]This topcoat may never dry…[/i]"
- XM1014 Incinegator: "A custom paint job resembling a gator spitting fire has been applied. [i]Boom. Bam. Bop... Pow.[/i]"
- UMP-45 Moonrise: "A randomized city landscape in the foreground gives way to a full moon and purple-red night sky. [i]Look for the North Star[/i]"

- CS:GO Stash is working on getting Prisma Case items up on their side as well

- /u/SlothSquadron has said that due to the detail Valve already gave for weapon stat changes, [url=https://www.reddit.com/r/GlobalOffensive/comments/b0t5l3/counterstrike_global_offensive_update_for_31319/eih09xg/]he'll be abstaining from doing a write-up on this one[/url]

- Script updates, localization file updates (made possible in part by contributions from Translators Like You - Thank You), new strings, and more: https://github.com/SteamDatabase/GameTracking-CSGO/commit/e51e54fc6d2d12a5e42502bfbba0a2cd8ee95825

- Size is ~120 MB