From 8a454ae839be3115d354b0005bbe22b786039a3c Mon Sep 17 00:00:00 2001
From: psamanoelton <psamano@griddynamics.com>
Date: Mon, 29 Jun 2026 15:21:05 -0600
Subject: [PATCH 1/2] Bump version at HEAD to 2.22.0a0

---
 tensorboard/version.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tensorboard/version.py b/tensorboard/version.py
index d3dadf70bcd..8679b61e815 100644
--- a/tensorboard/version.py
+++ b/tensorboard/version.py
@@ -15,7 +15,7 @@
 
 """Contains the version string."""
 
-VERSION = "2.21.0a0"
+VERSION = "2.22.0a0"
 
 if __name__ == "__main__":
     print(VERSION)

From 50f23ceb797f3f865cca56e9538ff06ce19186d9 Mon Sep 17 00:00:00 2001
From: psamanoelton <psamano@griddynamics.com>
Date: Wed, 17 Jun 2026 15:49:38 -0600
Subject: [PATCH 2/2] Release notes for TensorBoard 2.21.0 (#7129)

This is the 2/3 changes for release of 2.21.0

(cherry picked from commit d468e3c16cb354abbd2d29723dcf12a8da925fef)
---
 RELEASE.md | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/RELEASE.md b/RELEASE.md
index b7b407f78f7..11f8c6637df 100644
--- a/RELEASE.md
+++ b/RELEASE.md
@@ -1,3 +1,17 @@
+# Release 2.21.0
+
+The 2.21 minor series tracks TensorFlow 2.21.
+
+## Features
+- Time Series Dashboard Optimization: Improved usability for time-series tooltips by limiting them to a maximum of 5 items and setting the default sorting to `"Nearest Pixel"` (prioritizing values closest to the cursor) (#7046, #7051).
+
+## Bug Fixes
+- Fix a Projector plugin vulnerability. (#7115)
+- Dependency Compatibility: Fixed runtime crashes caused by the missing `pkg_resources` library in newer environments (migrated to standard `importlib.metadata`) (#7057).
+
+## Breaking Changes
+- This version updates its runtime dependency requirements to align with the TensorFlow 2.21 dependency stack. In particular, `protobuf` now requires >=6.31.1, <8.0.0 and `grpcio` now requires >=1.74.0, <2.0.
+
 # Release 2.20.0
 
 The 2.20 minor series tracks TensorFlow 2.20.