CS2 Premier Season 5 + Cache rework — August 3, 2026 patch notes

Highlights

• Premier Season 5 officially launched

with a new ranking distribution

• Cache rework ships with the update —

fixed gaps, collisions, flickering, and a removed boost spot

• New scripting API for map creators

(bomb, grenade, defuse events)

• Shelter map updated from the Community

Workshop

• ~10GB download size for the full

update

Premier Season 5

CS2 Premier Season 5 launched alongside the August 3 patch. Notable changes from Season 4:

• Ranked distribution shift — the

distribution curve has been rebalanced. Expect a small rank reset for most players

• CS Rating 2.0 — the rating algorithm

now weights clutch rounds and multi-kill rounds slightly higher

• New Premier hub — redesigned

leaderboards, match history, and stats

• Map pool: Cache is back (reworked),

Dust2, Mirage, Inferno, Nuke, Ancient, Vertigo, Anubis. Train and Office removed from active duty

• Matchmaking improvements — better

server selection for players in Asia-Pacific regions

Cache rework

Cache, last played competitively in 2019, returns to active duty in Premier Season 5. The rework is light-touch — Valve kept the map's iconic layout but fixed community-reported issues.

• Fixed gaps in the map (multiple

wall and floor gaps that allowed grenade throws through level geometry)

• Fixed collisions in various spots
• Fixed flickering on some assets
• Removed a boost spot in Outside A

Shelter that was being abused

• Updated textures to match the Source

2 lighting model

• Grenade collision fix — grenades

can no longer be thrown through certain level geometry

The map's layout is unchanged from the 2019 version — same callouts, same chokepoints. Existing Cache muscle memory transfers.

Shelter update

The community-made Shelter map was updated from the Community Workshop:

• Visual improvements (lighting,

texture polish)

• Minor layout tweaks for competitive

balance

• Bomb site adjustments — A site is

slightly more defender-friendly

Shelter is not in the active duty pool but is available in the Casual and Deathmatch queues.

Scripting API expansion

Valve shipped a major scripting API expansion for community map makers. New events, methods, and enums:

New events

• Instance.OnWeaponPickup — fires when

a player picks up a weapon

• Instance.OnBombExplode — fires on

bomb detonation

• Instance.OnBombDefuse — fires on

successful defuse

• Instance.SpawnGrenadeProjectile —

programmatic grenade spawn

New methods

• Instance.TracePlayer — line-of-sight

check from a player's perspective

• Instance.RegisterCheatCommand —

register custom console commands (with a bug fix in this patch)

• Instance.OnGrenadeBounce — grenade

bounce callback (deprecated the old bounce data parameter)

New enum

• CSGrenadeType — flashbang, smoke,

molotov, HE grenade, decoy

The scripting expansion is aimed at custom game mode creators — the August 3 update also includes an updated trace_zoo script that uses the new TracePlayer helper for better player collision visualization in workshop maps.

Other changes

• Major Ranked sticker text localization

lines were slightly reworded (no gameplay impact)

• Developer-only material cache limit

was raised (helps modders and custom game creators)

• Multiple engine/tool components got

minor internal updates

• Build metadata and resource manifests

were refreshed (no net change to shipped content paths)

Bug fixes

• Grenade collision — fixed a case

where grenades could be thrown through level geometry

• Cache boost spot — removed the

Outside A Shelter boost spot

• Cache asset flickering — fixed

multiple assets that flickered under certain lighting conditions

• Instance.RegisterCheatCommand —

fixed a bug that prevented custom commands from registering

• Grenade bounce data deprecation —

old OnGrenadeBounce parameter is deprecated, use the new fields

Performance

The update ships with several engine optimizations that improve frame rates on mid-range hardware. Reports from the Steam community indicate 5-10% FPS improvements on older CPUs, particularly on maps with heavy fog (Nuke, Overpass).

How to update

The 10GB update is mandatory — CS2 will not launch without it. Steam will download it automatically. If you have the beta branch enabled, you may need to opt out to receive this update.

FAQ

What changed in CS2 Premier Season 5?

New ranking distribution (small rank reset expected), CS Rating 2.0 algorithm (clutch and multi-kill rounds weighted higher), redesigned Premier hub, and Cache added to the active duty map pool.

Is Cache back in CS2?

Yes, Cache returns to the active duty map pool in Premier Season 5. The map's layout is unchanged from 2019 but bugs (gaps, collisions, boost spots) have been fixed.

How big is the CS2 August 3 update?

Approximately 10GB. The full update is required to play.

What new scripting features are in

the update?

New events (OnWeaponPickup, OnBombExplode, OnBombDefuse, SpawnGrenadeProjectile), new methods (TracePlayer, fixed RegisterCheatCommand), and a new CSGrenadeType enum.

What's next for CS2?

The next major update is expected in September 2026 — likely a smaller balance patch and a new operation. CS2 Premier Season 6 will likely launch in October or November 2026.

Are there any new skins in the

update?

No. Valve did not add any new weapon skins or cases in the August 3 update.

What's the new Premier hub?

A redesigned UI for leaderboards, match history, and player stats. Available in the CS2 main menu.

Sources: CS2 News August 3 update tracker, Valve CS2 official X post, Skinbook CS2 news daily recap Aug 6, 2026.