diff --git a/README.md b/README.md
index 1aa3e53..0907d7e 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,9 @@ life simulation RPG (**adult content**), ported from Unreal Engine 4.27 to **Unr
 ## Download the full project
 
 This Git repository does not contain the heavy assets (see [Repository contents](#repository-contents)). To build or
-play, download the full source archive.
+play, download the full source archive. The V1.2 archive will be linked here once uploaded; until then, use the V1.1
+archive below and update the Git files from the `v1.2` tag (V1.2 also changes 29 textures in `Content/Heavy`; without
+them the game works the same, those textures simply keep no mipmaps).
 
 **[LifePlay_Revival_V1.1_UE5.5_Full_Source_Code.7z](https://mega.nz/file/rwpRTbjA#P6sKfJM8xfGeLXcIylUsUvRSGezLi36FWtXgwxFxvvo)** (Mega, 4.94 GB)
 
@@ -25,6 +27,33 @@ Check the file after downloading (PowerShell):
 Get-FileHash .\LifePlay_Revival_V1.1_UE5.5_Full_Source_Code.7z -Algorithm SHA256
 ```
 
+## Status: V1.2 (tag `v1.2`, 2026-10-02)
+
+Optimisation release. Every change was measured with the engine profilers (CSV profiler, memory tracker, Unreal
+Insights) and validated in game. Details: [`Docs/Migration/11_Audit_Optimisation.md`](Docs/Migration/11_Audit_Optimisation.md).
+
+| Shipping build | V1.1 | V1.2 |
+|---|---:|---:|
+| Size | 3,246 MB | **1,494 MB (−54 %)** |
+| Files | 24,249 | **2,084** |
+| Loading a saved game ("Continue") | ≈ 71 s | **≈ 15 s** |
+| Physics memory | 463 MB | **83 MB** |
+| Total memory | ≈ 3.5 GB | **≈ 3.1 GB** |
+
+- **Faster loading.** The city map gave a physics body to each of its ≈ 160,000 decorative trees, cars and building
+  markers (the same in UE 4.27). Their collision is now disabled; clicks on map icons are unaffected.
+- **Compressed content.** Game content now ships in UE5 IoStore containers compressed with Oodle (the engine
+  defaults). `Content/Modules` (all mods, text files) and the intro movie stay as plain files, so modding works as
+  before. The `ModdingExtra` plugin finds cooked assets through the asset registry when they are not plain files
+  (city list).
+- **Smaller build.** 20 engine plugins the game never uses (neural network denoiser, Interchange, Fab…) are limited to
+  the editor, and debug symbols are no longer shipped.
+- **Textures.** 29 clothing, road and pavement textures now have mipmaps (less shimmering at a distance).
+- **Fixes and improvements carried over from the post-V1.1 work**: the phone call box now frames the contact's face
+  (was empty in UE 4.27); characters' feet are no longer hidden in outdoor locations (a ceiling 18 cm above the floor,
+  also in UE 4.27); explicit rendering settings and `SkyAtmosphere` instead of the deprecated `AtmosphericFog`.
+- **Documentation** (French) for developers: architecture after the migration, developer guide, useful commands,
+  operating protocol — start at [`Docs/Migration/README.md`](Docs/Migration/README.md).
 ## Status: V1.1 (tag `v1.1`, 2026-10-01)
 
 Changes since V1, each validated in game against UE 4.27 on an identical play path:
@@ -56,6 +85,7 @@ Changes since V1, each validated in game against UE 4.27 on an identical play pa
 | Branch | Contents |
 |---|---|
 | `main` | **reference**: the latest validated UE 5.5 version, base for further development |
+| `ue5.5-v1.2` | the V1.2 as validated |
 | `ue5.5-v1.1` | the V1.1 as validated |
 | `ue5.5-v1` | the V1 as validated |
 | `archive/ue4.27` | the project as it ran on UE 4.27, before the migration (archive) |