diff --git a/doc/tutorials/dnn/dnn_android/dnn_android.markdown b/doc/tutorials/dnn/dnn_android/dnn_android.markdown
index a88a72f2e4..1a3f9224a9 100644
--- a/doc/tutorials/dnn/dnn_android/dnn_android.markdown
+++ b/doc/tutorials/dnn/dnn_android/dnn_android.markdown
@@ -12,7 +12,7 @@ Tutorial was written for the following versions of corresponding software:
 
 - Download and install Android Studio from https://developer.android.com/studio.
 
-- Get the latest pre-built OpenCV for Android release from https://github.com/opencv/opencv/releases and unpack it (for example, `opencv-3.4.9-android-sdk.zip`).
+- Get the latest pre-built OpenCV for Android release from https://github.com/opencv/opencv/releases and unpack it (for example, `opencv-3.4.10-android-sdk.zip`).
 
 - Download MobileNet object detection model from https://github.com/chuanqi305/MobileNet-SSD. We need a configuration file `MobileNetSSD_deploy.prototxt` and weights `MobileNetSSD_deploy.caffemodel`.
 
diff --git a/doc/tutorials/introduction/cross_referencing/tutorial_cross_referencing.markdown b/doc/tutorials/introduction/cross_referencing/tutorial_cross_referencing.markdown
index 0c164b03b9..c64c012028 100644
--- a/doc/tutorials/introduction/cross_referencing/tutorial_cross_referencing.markdown
+++ b/doc/tutorials/introduction/cross_referencing/tutorial_cross_referencing.markdown
@@ -36,14 +36,14 @@ Open your Doxyfile using your favorite text editor and search for the key
 `TAGFILES`. Change it as follows:
 
 @code
-TAGFILES = ./docs/doxygen-tags/opencv.tag=http://docs.opencv.org/3.4.9
+TAGFILES = ./docs/doxygen-tags/opencv.tag=http://docs.opencv.org/3.4.10
 @endcode
 
 If you had other definitions already, you can append the line using a `\`:
 
 @code
 TAGFILES = ./docs/doxygen-tags/libstdc++.tag=https://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen \
-           ./docs/doxygen-tags/opencv.tag=http://docs.opencv.org/3.4.9
+           ./docs/doxygen-tags/opencv.tag=http://docs.opencv.org/3.4.10
 @endcode
 
 Doxygen can now use the information from the tag file to link to the OpenCV
diff --git a/modules/core/include/opencv2/core/version.hpp b/modules/core/include/opencv2/core/version.hpp
index 5a372feb8c..571745a2c5 100644
--- a/modules/core/include/opencv2/core/version.hpp
+++ b/modules/core/include/opencv2/core/version.hpp
@@ -7,8 +7,8 @@
 
 #define CV_VERSION_MAJOR    3
 #define CV_VERSION_MINOR    4
-#define CV_VERSION_REVISION 9
-#define CV_VERSION_STATUS   "-dev"
+#define CV_VERSION_REVISION 10
+#define CV_VERSION_STATUS   "-pre"
 
 #define CVAUX_STR_EXP(__A)  #__A
 #define CVAUX_STR(__A)      CVAUX_STR_EXP(__A)
diff --git a/modules/python/package/setup.py b/modules/python/package/setup.py
index 6bd06c65b7..4aeb1815a7 100644
--- a/modules/python/package/setup.py
+++ b/modules/python/package/setup.py
@@ -9,7 +9,7 @@ def main():
     os.chdir(SCRIPT_DIR)
 
     package_name = 'opencv'
-    package_version = os.environ.get('OPENCV_VERSION', '3.4.9')  # TODO
+    package_version = os.environ.get('OPENCV_VERSION', '3.4.10')  # TODO
 
     long_description = 'Open Source Computer Vision Library Python bindings'  # TODO
 
diff --git a/platforms/android/build_sdk.py b/platforms/android/build_sdk.py
index 8c0ef8978f..61df24141f 100755
--- a/platforms/android/build_sdk.py
+++ b/platforms/android/build_sdk.py
@@ -267,7 +267,7 @@ class Builder:
         # Add extra data
         apkxmldest = check_dir(os.path.join(apkdest, "res", "xml"), create=True)
         apklibdest = check_dir(os.path.join(apkdest, "libs", abi.name), create=True)
-        for ver, d in self.extra_packs + [("3.4.9", os.path.join(self.libdest, "lib"))]:
+        for ver, d in self.extra_packs + [("3.4.10", os.path.join(self.libdest, "lib"))]:
             r = ET.Element("library", attrib={"version": ver})
             log.info("Adding libraries from %s", d)
 
diff --git a/platforms/android/service/readme.txt b/platforms/android/service/readme.txt
index 7720ab37db..14647a6ffe 100644
--- a/platforms/android/service/readme.txt
+++ b/platforms/android/service/readme.txt
@@ -12,7 +12,7 @@ manually using adb tool:
 
     adb install <path-to-OpenCV-sdk>/apk/OpenCV_<version>_Manager_<app_version>_<platform>.apk
 
-Example: OpenCV_3.4.9-dev_Manager_3.49_armeabi-v7a.apk
+Example: OpenCV_3.4.10-dev_Manager_3.49_armeabi-v7a.apk
 
 Use the list of platforms below to determine proper OpenCV Manager package for your device:
 
diff --git a/platforms/maven/opencv-it/pom.xml b/platforms/maven/opencv-it/pom.xml
index 84109391f5..bcdde87ef3 100644
--- a/platforms/maven/opencv-it/pom.xml
+++ b/platforms/maven/opencv-it/pom.xml
@@ -4,7 +4,7 @@
     <parent>
         <groupId>org.opencv</groupId>
         <artifactId>opencv-parent</artifactId>
-        <version>3.4.9</version>
+        <version>3.4.10</version>
     </parent>
     <groupId>org.opencv</groupId>
     <artifactId>opencv-it</artifactId>
diff --git a/platforms/maven/opencv/pom.xml b/platforms/maven/opencv/pom.xml
index f0a4103bcf..f08fe0945c 100644
--- a/platforms/maven/opencv/pom.xml
+++ b/platforms/maven/opencv/pom.xml
@@ -4,7 +4,7 @@
     <parent>
         <groupId>org.opencv</groupId>
         <artifactId>opencv-parent</artifactId>
-        <version>3.4.9</version>
+        <version>3.4.10</version>
     </parent>
     <groupId>org.opencv</groupId>
     <artifactId>opencv</artifactId>
diff --git a/platforms/maven/pom.xml b/platforms/maven/pom.xml
index 4f02f32fbd..86ce61c6b4 100644
--- a/platforms/maven/pom.xml
+++ b/platforms/maven/pom.xml
@@ -3,7 +3,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>org.opencv</groupId>
     <artifactId>opencv-parent</artifactId>
-    <version>3.4.9</version>
+    <version>3.4.10</version>
     <packaging>pom</packaging>
     <name>OpenCV Parent POM</name>
     <licenses>