diff --git a/CITATION.cff b/CITATION.cff
index e033dc8a3..cd439130d 100644
--- a/CITATION.cff
+++ b/CITATION.cff
@@ -5,6 +5,6 @@ authors:
   given-names: "Ryo"
 title: "Siv3D"
 license: MIT
-version: 0.6.14
-date-released: 2024-02-05
+version: 0.6.15
+date-released: 2024-07-03
 url: "https://github.com/Siv3D/OpenSiv3D"
\ No newline at end of file
diff --git a/Linux/App/Main.cpp b/Linux/App/Main.cpp
index e47d28f41..3cdab34ab 100644
--- a/Linux/App/Main.cpp
+++ b/Linux/App/Main.cpp
@@ -3,7 +3,7 @@
 //
 //	Example non-graphical program
 //
-# include <Siv3D.hpp> // Siv3D v0.6.14
+# include <Siv3D.hpp> // Siv3D v0.6.15
 SIV3D_SET(EngineOption::Renderer::Headless) // Force non-graphical mode
 void Main()
 {
@@ -22,7 +22,7 @@ void Main()
 //
 //	Example graphical program
 //
-# include <Siv3D.hpp> // Siv3D v0.6.14
+# include <Siv3D.hpp> // Siv3D v0.6.15
 
 void Main()
 {
diff --git a/Linux/CMakeLists.txt b/Linux/CMakeLists.txt
index 3d68fe6bb..14c2fa83b 100644
--- a/Linux/CMakeLists.txt
+++ b/Linux/CMakeLists.txt
@@ -1,7 +1,7 @@
 cmake_minimum_required(VERSION 3.12)
 
 project(OpenSiv3D_Linux
-    VERSION 0.6.14
+    VERSION 0.6.15
     LANGUAGES CXX C ASM
     HOMEPAGE_URL "https://github.com/Siv3D/OpenSiv3D"
     DESCRIPTION "A C++20 framework for creative coding (2D/3D games, media art, visualizers, and simulators)."
diff --git a/README.md b/README.md
index f58b3be61..e6a375eb9 100644
--- a/README.md
+++ b/README.md
@@ -109,17 +109,21 @@
 - **(English) Getting Started with Siv3D:** https://siv3d.github.io/en-us/
 - **(日本語) Siv3D をはじめよう:** https://siv3d.github.io/ja-jp/
 
-**v0.6.14** | *released 5 February 2024* | [Release Notes](https://siv3d.github.io/ja-jp/releases/)
+**v0.6.15** | *released 3 July 2024* | [Release Notes](https://siv3d.github.io/ja-jp/releases/)
 
 | Platform           | SDK  | Requirements                  |
 |:------------------:|:----------:|:------------------------------|
-| Windows            | [**Download SDK**](https://siv3d.github.io/en-us/download/windows/) /<br>[**SDK をダウンロード**](https://siv3d.github.io/ja-jp/download/windows/) | - Windows 10 / 11 (64-bit)<br>- Microsoft Visual C++ 2022 17.7<br>- Windows 10 SDK<br>- Intel / AMD CPU |
+| Windows            | [**Download SDK**](https://siv3d.github.io/en-us/download/windows/) /<br>[**SDK をダウンロード**](https://siv3d.github.io/ja-jp/download/windows/) | - Windows 10 / 11 (64-bit)<br>- Microsoft Visual C++ 2022 17.9<br>- Windows 10 SDK<br>- Intel / AMD CPU |
 | macOS              | [**Download SDK**](https://siv3d.github.io/en-us/download/macos/) /<br>[**SDK をダウンロード**](https://siv3d.github.io/ja-jp/download/macos/) | - macOS Big Sur / Monterey / Ventura<br>- Xcode 12.5 or newer<br>- Intel CPU / Apple Silicon (Rosetta mode)*<br>- OpenGL 4.1 compatible hardware |
 | Linux              | [**Compiling for Linux**](https://siv3d.github.io/en-us/download/ubuntu/) /<br>[**Linux 版のビルド**](https://siv3d.github.io/ja-jp/download/ubuntu/) | - GCC 9.3.0 (with Boost 1.71.0) / GCC 11.2 (with Boost 1.74.0)<br>- Intel / AMD CPU<br>- OpenGL 4.1 compatible hardware |
 | Web (experimental**) | [**Compiling for Web**](https://siv3d.kamenokosoft.com/docs/en/) /<br>[**Web 版のビルド**](https://siv3d.kamenokosoft.com/docs/ja/) | Web browser with WebAssembly and WebGL2 support |
 
 <small>* Native Apple Silicon support will be added in the future release. You can build and run Siv3D in Rosetta mode</small><br><small>** Some functionality may be missing or limited</small>
 
+## Next Major Update
+
+The next major update, Siv3D v0.8, is under development in the following repository.
+- https://github.com/Siv3D/siv8
 
 ## Community
 
diff --git a/Siv3D/include/Siv3D/Version.hpp b/Siv3D/include/Siv3D/Version.hpp
index 864cc6400..6a8d2536c 100644
--- a/Siv3D/include/Siv3D/Version.hpp
+++ b/Siv3D/include/Siv3D/Version.hpp
@@ -18,7 +18,7 @@
 # define SIV3D_VERSION_MINOR			6
 
 /// @brief ライブラリのリビジョンバージョン | Library revision version
-# define SIV3D_VERSION_REVISION			14
+# define SIV3D_VERSION_REVISION			15
 
 /// @brief プレリリースタグ | Pre-release tag
 # define SIV3D_VERSION_PRERELEASE_TAG	U""
@@ -27,10 +27,10 @@
 # define SIV3D_VERSION			((SIV3D_VERSION_MAJOR * 100 * 100) + (SIV3D_VERSION_MINOR * 100) + (SIV3D_VERSION_REVISION))
 
 /// @brief ライブラリのバージョンの文字列（簡易版） | Short Library version
-# define SIV3D_VERSION_SHORT_STRING	U"0.6.14"
+# define SIV3D_VERSION_SHORT_STRING	U"0.6.15"
 
 /// @brief ライブラリのバージョンの文字列 | Library version
-# define SIV3D_VERSION_STRING	U"0.6.14" SIV3D_VERSION_PRERELEASE_TAG
+# define SIV3D_VERSION_STRING	U"0.6.15" SIV3D_VERSION_PRERELEASE_TAG
 
 /// @brief ライブラリのバージョン名 | Library version name
-# define SIV3D_VERSION_NAME		U"Siv3D February 2024"
+# define SIV3D_VERSION_NAME		U"Siv3D July 2024"
diff --git a/WindowsDesktop/Main.cpp b/WindowsDesktop/Main.cpp
index 28032df6b..5c3b6ea32 100644
--- a/WindowsDesktop/Main.cpp
+++ b/WindowsDesktop/Main.cpp
@@ -1,4 +1,4 @@
-# include <Siv3D.hpp> // Siv3D v0.6.14
+# include <Siv3D.hpp> // Siv3D v0.6.15
 
 void Main()
 {
diff --git a/macOS/Main.cpp b/macOS/Main.cpp
index b5905a94c..4c3e4f899 100644
--- a/macOS/Main.cpp
+++ b/macOS/Main.cpp
@@ -1,4 +1,4 @@
-# include <Siv3D.hpp> // Siv3D v0.6.14
+# include <Siv3D.hpp> // Siv3D v0.6.15
 
 void Main()
 {