diff --git a/VERSION b/VERSION
index 5503126d..1d0ba9ea 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.3.10
+0.4.0
diff --git a/docs/releases/v0.4.0.md b/docs/releases/v0.4.0.md
new file mode 100644
index 00000000..53a8fee3
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+++ b/docs/releases/v0.4.0.md
@@ -0,0 +1,62 @@
+The first public release of NX2navi: *The Legend of Zelda: Ocarina of Time* for Nintendo Switch 2 (game version
+1.1.1), recompiled into a native Windows game with a Vulkan renderer. **No game files are included**: the setup builds
+the game on your PC from your own dump.
+
+## Install
+
+1. Download **`NX2navi-Setup-0.4.0.exe`** below. It is the only file you need; the other files are for the launcher's
+   updates.
+2. Put it next to your `.nup` dump of the game and start it. Windows SmartScreen warns on the first start because the
+   setup is not signed: choose *More info* and *Run anyway*.
+3. The launcher finds the dump, downloads its build tools, builds the game (10 to 25 minutes, once) and prepares every
+   shader, then starts it. From then on it offers each new release at start and rebuilds only what changed.
+
+**Requirements:** Windows 10 or 11; an x86-64 CPU with SSE4.2; 16 GB of RAM; about 30 GB free for the game and 1.5 GB
+for the launcher; a GPU with Vulkan 1.3, `VK_EXT_external_memory_host` and `VK_EXT_mesh_shader` (current NVIDIA and AMD
+cards).
+
+## Features
+
+- Native code, not emulation; 60 fps by default, or 30 to 240 fps, your display's refresh rate or unlimited
+- Widescreen and ultrawide (21:9, 32:9 or your window's shape) with the HUD, menus and movies kept 16:9
+- Resolutions above the game's 1440p: 1800p, 4K, 5K or your window's own size
+- NVIDIA DLSS (DLAA to Ultra Performance, RTX GPUs) or AMD FSR 3.1 (Native AA and the same modes, any GPU), or FSR 1
+  and bilinear scaling with a sharpness setting
+- AMD FSR 3.1 frame generation on any GPU, with the HUD kept out of the generated frames
+- HDR: the game's own native HDR, or an enhanced HDR made from its SDR picture
+- Every shader prepared when the game is built, and pipelines built in the background, so play does not stop to
+  compile them
+- In-game settings menu (F1, or Minus and Plus together on a gamepad) and a performance overlay (F10)
+- Keyboard, mouse and gamepads with remapping, Nintendo or Xbox button layout, rumble and gyro
+- Stereo or 5.1 surround; docked or handheld mode
+- Textures kept compressed on PCs with less than 20 GB of video memory or 48 GB of RAM, for about half the video memory
+
+## New in this release
+
+- Every one of the game's 36,031 shader variants now translates, so no object is left undrawn for a failed shader.
+- A draw that has to wait for its pipeline no longer compiles on the game's drawing thread; the warm-start stalls on
+  the test route are gone.
+- Frame generation in a window of another shape than the picture keeps the black bars clean.
+- Atomic operations in shaders no longer spin on stale values on some drivers.
+- A graphics card chosen in the menu that is gone or not usable no longer stops the game from starting: the best
+  usable one is taken instead.
+- Holding Esc no longer opens the menu and closes it again; the menu no longer opens unseen on the boot screen.
+- Picking a DLSS mode, which applies after a restart, no longer lowers the picture until then; FSR 1 or bilinear
+  scaling also turns frame generation off.
+- The HDR peak brightness slider reaches 10,000 nits.
+- Crashes, freezes and races fixed across the renderer, saves, movies and the window; lower video memory use.
+- The Triforce as the game's and the launcher's icon.
+
+## Known issues
+
+- Some areas show stretched polygons for a moment (a dark column reaching into the sky on Death Mountain and in
+  Kakariko).
+- Entering a new area can hold one frame for about 0.2 s while its textures are set up, and the first visit to an
+  area after an install can pause briefly while the graphics driver builds what it has not seen.
+- A rare crash in the game's particle code.
+- DLSS Frame Generation is not offered yet: AMD FSR 3.1 frame generation works on every GPU, NVIDIA's included.
+
+Report problems as issues, with the game's log (`logs\nx2navi.log` in the game folder) and what you were doing.
+
+NX2navi is an independent, non-commercial fan project, not affiliated with or endorsed by Nintendo. *The Legend of
+Zelda*, *Ocarina of Time* and *Nintendo Switch* are trademarks of Nintendo.