diff --git a/cmake/firebase_unity_version.cmake b/cmake/firebase_unity_version.cmake
index ac8d8495..8d49ff83 100644
--- a/cmake/firebase_unity_version.cmake
+++ b/cmake/firebase_unity_version.cmake
@@ -27,7 +27,7 @@ set(FIREBASE_UNITY_JAR_RESOLVER_VERSION "1.2.179"
 )
 
 # https://github.com/firebase/firebase-cpp-sdk
-set(FIREBASE_CPP_SDK_PRESET_VERSION "v11.10.0"
+set(FIREBASE_CPP_SDK_PRESET_VERSION "v12.0.0"
    CACHE STRING
   "Version tag of Firebase CPP SDK to download (if no local or not passed in) and use (no trailing .0)"
 )
diff --git a/docs/readme.md b/docs/readme.md
index 6e5f47f4..9668b8cb 100644
--- a/docs/readme.md
+++ b/docs/readme.md
@@ -71,8 +71,15 @@ Support
 
 Release Notes
 -------------
-### Upcoming
+### 12.0.0
 - Changes
+    - General: Update to Firebase C++ SDK version 12.0.0.
+    - General (Android): Update to Firebase Android BoM version 33.0.0.
+    - General (Android): Updated minSdkVersion to 23, and targetSdkVersion
+      and compileSdkVersion to 34.
+    - General (iOS): Update to Firebase Cocoapods version 10.25.0.
+    - General (iOS): Minimum iOS deployment target is now 13.0.
+    - General: Minimum supported editor version is now Unity 2020.
     - Auth: Remove deprecated calls involving `SignInResult`, most of
       which were appended with `_DEPRECATED`.
     - Remote Config: Remove deprecated `ConfigSettings.MinimumFetchInternalInMilliseconds`,