Update AUTHORS,CHANGELOG,CMakeLists.txt for 3.15.0

Bug: 549271249
Change-Id: Ifcb482dc4386cb9a1f31f12c316b71ffb1e084ee
diff --git a/AUTHORS b/AUTHORS
index 7a56c47..0582a75 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -53,6 +53,7 @@
 Chethan Kumar R E <chethan.kumar@ittiam.com>
 Chi Yo Tsai <chiyotsai@google.com>
 Chm <chm@rock-chips.com>
+Chris Davis <chrdavis@microsoft.com>
 Christian Duvivier <cduvivier@google.com>
 Christopher Degawa <christopher.degawa@intel.com>
 Cyril Concolato <cconcolato@netflix.com>
@@ -103,6 +104,7 @@
 Grant Hsu <grant.hsu@cidana.com>
 Guillaume Martres <smarter@ubuntu.com>
 Guillermo Ballester Valor <gbvalor@gmail.com>
+gurusai-voleti <gvoleti@google.com>
 Hamsalekha S <hamsalekha.s@ittiam.com>
 Hangyu Kuang <hkuang@google.com>
 Hanno Böck <hanno@hboeck.de>
diff --git a/CHANGELOG b/CHANGELOG
index bd232f1..1803257 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,20 @@
+2026-08-20 v3.15.0
+  This release is ABI compatible with the last release.
+
+  This release includes the fixes for all the security issues found by
+  AI tools recently.
+
+  Important build system change: The cmake option ENABLE_APPS was added
+  to build aomdec and aomenc without building the example programs. The
+  cmake option ENABLE_EXAMPLES was redefined to build only the example
+  programs.
+
+  - New Features
+    * Test only: New codec control AV1E_SET_MODE_REF_DELTA_ENABLED for
+      the encoder to toggle loopfilter mode_ref_delta_enabled.
+    * New key-value pair “force-max-q” for the encoder to force the use
+      of max Q in VBR mode.
+
 2026-05-22 v3.14.1
   This release is ABI compatible with the last release. See
   https://aomedia.googlesource.com/aom/+log/v3.14.0..v3.14.1 for all the
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3ffc6b9..2170c4f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -23,7 +23,7 @@
 
 # VERSION is the release version of the library. It should be updated at the
 # same time as the LT_* variables.
-project(AOM LANGUAGES C CXX VERSION 3.14.1)
+project(AOM LANGUAGES C CXX VERSION 3.15.0)
 
 # GENERATED source property global visibility.
 if(POLICY CMP0118)
@@ -58,9 +58,9 @@
 # We set SO_FILE_VERSION = [c-a].a.r
 #
 # The VERSION number in project() should be updated when these variables are.
-set(LT_CURRENT 17)
-set(LT_REVISION 1)
-set(LT_AGE 14)
+set(LT_CURRENT 18)
+set(LT_REVISION 0)
+set(LT_AGE 15)
 math(EXPR SO_VERSION "${LT_CURRENT} - ${LT_AGE}")
 set(SO_FILE_VERSION "${SO_VERSION}.${LT_AGE}.${LT_REVISION}")
 unset(LT_CURRENT)