diff --git a/CMakeLists.txt b/CMakeLists.txt
index d06b620ee..693048fc9 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,7 +2,7 @@
 cmake_minimum_required(VERSION 3.16)
 
 set(CMAKE_USER_MAKE_RULES_OVERRIDE_CXX "${CMAKE_CURRENT_SOURCE_DIR}/cmake/cxx_compiler_flags_overrides.cmake")
-project(Z3 VERSION 4.14.2.0 LANGUAGES CXX)
+project(Z3 VERSION 4.15.0.0 LANGUAGES CXX)
 
 ################################################################################
 # Project version
diff --git a/RELEASE_NOTES.md b/RELEASE_NOTES.md
index aa9525caf..cabf9e681 100644
--- a/RELEASE_NOTES.md
+++ b/RELEASE_NOTES.md
@@ -8,9 +8,12 @@ Version 4.next
   - add global incremental pre-processing for the legacy core.
 
 
-Version 4.14.2
+Version 4.15.0
 ==============
 - Improved integer cut algorithms for linear integer arithmetic.
+  It integrates diophantine equation solving with stronger cuts.
+- C and OCaml API for accessing numerics, thanks to Josh Berdine
+- Bug fixes.
 
 Version 4.14.1
 ==============
diff --git a/scripts/mk_project.py b/scripts/mk_project.py
index d4db29f0d..fdaf83e0e 100644
--- a/scripts/mk_project.py
+++ b/scripts/mk_project.py
@@ -8,7 +8,7 @@
 from mk_util import *
 
 def init_version():
-    set_version(4, 14, 2, 0) # express a default build version or pick up ci build version
+    set_version(4, 15, 0, 0) # express a default build version or pick up ci build version
     
 # Z3 Project definition
 def init_project_def():
diff --git a/scripts/nightly.yaml b/scripts/nightly.yaml
index e1f4ba423..a35d89e05 100644
--- a/scripts/nightly.yaml
+++ b/scripts/nightly.yaml
@@ -1,7 +1,7 @@
 variables:
   Major: '4'
-  Minor: '14'
-  Patch: '2'
+  Minor: '15'
+  Patch: '0'
   ReleaseVersion: $(Major).$(Minor).$(Patch)
   AssemblyVersion: $(Major).$(Minor).$(Patch).$(Build.BuildId)
   NightlyVersion: $(AssemblyVersion)-$(Build.buildId)
diff --git a/scripts/release.yml b/scripts/release.yml
index f1a82690e..9f80d6f16 100644
--- a/scripts/release.yml
+++ b/scripts/release.yml
@@ -6,7 +6,7 @@
 trigger: none
 
 variables:
-  ReleaseVersion: '4.14.2'
+  ReleaseVersion: '4.15.0'
 
 stages: