diff --git a/changelog.md b/changelog.md
index cf2128694..13ce7c86e 100644
--- a/changelog.md
+++ b/changelog.md
@@ -1,17 +1,25 @@
-# Microsoft 365 Agents SDK for Python - Release Notes v1.6.1 (Unreleased)
+# Microsoft 365 Agents SDK for Python - Release Notes v1.7.0
 
-**Release Date:** Unreleased
+**Release Date:** 2026-09-17
 **Previous Version:** 1.5.0 (Released 2026-08-26)
 
+## Major Features & Enhancements
+
+- **Certificate Subject Name Authentication**: Added a `SendX5C` flag to support certificate-based authentication (#576)
+
 ## New Models & APIs
 
-- **MSAL Token Credential**: Added `MsalTokenCredential`, an Azure Core-compatible asynchronous token credential backed by MSAL, for authenticating Azure SDK clients that accept an `AsyncTokenCredential`.
-- **Authorization Token Credentials**: Added `AsyncTokenCredential` access through `AccessTokenProviderBase` and `Authorization`, including user-token refresh and exchange flows.
+- **MSAL Token Credential**: Added `MsalTokenCredential`, an Azure Core-compatible asynchronous token credential backed by MSAL, for authenticating Azure SDK clients that accept an `AsyncTokenCredential` (#565)
+- **Authorization Token Credentials**: Added `AsyncTokenCredential` access through `AccessTokenProviderBase` and `Authorization`, including user-token refresh and exchange flows (#568)
 - **Channel Feature Support Helpers**: Added `Channels` helper methods (e.g. `supports_card_actions`, `supports_suggested_actions`, `supports_video_card`, `supports_receipt_card`, `supports_thumbnail_card`, `supports_audio_card`, `supports_animation_card`, `supports_create_conversation`, `supports_update_activity`, `supports_delete_activity`) for checking per-channel feature support, accepting `Channels`, `ChannelId`, and plain string inputs (#580)
 
 ## Bug Fixes
 
-- **Typing Indicator on Update/Delete**: Fixed the typing indicator re-appearing in Teams clients after the finalized streaming activity was updated or deleted post-`end_stream()`.
+- **Typing Indicator on Update/Delete**: Fixed the typing indicator re-appearing in Teams clients after the finalized streaming activity was updated or deleted post-`end_stream()` (#570)
+
+## Developer Experience
+
+- **`AgentAuthConfiguration` Keyword-Only Arguments**: Made `cert_pfx_file`, `connection_name`, and `federated_client_id`, and other arguments keyword-only in `AgentAuthConfiguration.__init__` to clarify usage and prevent accidental misuse (#578)
 
 ---
 
diff --git a/libraries/microsoft-agents-activity/readme.md b/libraries/microsoft-agents-activity/readme.md
index 479d28416..53d824fd5 100644
--- a/libraries/microsoft-agents-activity/readme.md
+++ b/libraries/microsoft-agents-activity/readme.md
@@ -15,6 +15,15 @@ This library is part of the **Microsoft 365 Agents SDK for Python** - a comprehe
     <th style="width:20%">Date</th>
     <th style="width:60%">Release Notes</th>
   </tr>
+  <tr>
+    <td>1.7.0</td>
+    <td>2026-09-17</td>
+    <td>
+      <a href="https://github.com/microsoft/Agents-for-python/blob/main/changelog.md#microsoft-365-agents-sdk-for-python---release-notes-v170">
+        1.7.0 Release Notes
+      </a>
+    </td>
+  </tr>
   <tr>
     <td>1.5.0</td>
     <td>2026-08-26</td>
diff --git a/libraries/microsoft-agents-authentication-entra-auth-sidecar/readme.md b/libraries/microsoft-agents-authentication-entra-auth-sidecar/readme.md
index a9c7f4bb4..0a6f07cd3 100644
--- a/libraries/microsoft-agents-authentication-entra-auth-sidecar/readme.md
+++ b/libraries/microsoft-agents-authentication-entra-auth-sidecar/readme.md
@@ -15,6 +15,15 @@ handles secrets, certificates, or keys.
     <th style="width:20%">Date</th>
     <th style="width:60%">Release Notes</th>
   </tr>
+  <tr>
+    <td>1.7.0</td>
+    <td>2026-09-17</td>
+    <td>
+      <a href="https://github.com/microsoft/Agents-for-python/blob/main/changelog.md#microsoft-365-agents-sdk-for-python---release-notes-v170">
+        1.7.0 Release Notes
+      </a>
+    </td>
+  </tr>
   <tr>
     <td>1.5.0</td>
     <td>2026-08-26</td>
diff --git a/libraries/microsoft-agents-authentication-msal/readme.md b/libraries/microsoft-agents-authentication-msal/readme.md
index fe51e9b56..176f264e1 100644
--- a/libraries/microsoft-agents-authentication-msal/readme.md
+++ b/libraries/microsoft-agents-authentication-msal/readme.md
@@ -15,6 +15,15 @@ This library is part of the **Microsoft 365 Agents SDK for Python** - a comprehe
     <th style="width:20%">Date</th>
     <th style="width:60%">Release Notes</th>
   </tr>
+  <tr>
+    <td>1.7.0</td>
+    <td>2026-09-17</td>
+    <td>
+      <a href="https://github.com/microsoft/Agents-for-python/blob/main/changelog.md#microsoft-365-agents-sdk-for-python---release-notes-v170">
+        1.7.0 Release Notes
+      </a>
+    </td>
+  </tr>
   <tr>
     <td>1.5.0</td>
     <td>2026-08-26</td>
diff --git a/libraries/microsoft-agents-copilotstudio-client/readme.md b/libraries/microsoft-agents-copilotstudio-client/readme.md
index 5acc6aff1..d44ecbbf7 100644
--- a/libraries/microsoft-agents-copilotstudio-client/readme.md
+++ b/libraries/microsoft-agents-copilotstudio-client/readme.md
@@ -16,6 +16,15 @@ This library is part of the **Microsoft 365 Agents SDK for Python** - a comprehe
     <th style="width:20%">Date</th>
     <th style="width:60%">Release Notes</th>
   </tr>
+  <tr>
+    <td>1.7.0</td>
+    <td>2026-09-17</td>
+    <td>
+      <a href="https://github.com/microsoft/Agents-for-python/blob/main/changelog.md#microsoft-365-agents-sdk-for-python---release-notes-v170">
+        1.7.0 Release Notes
+      </a>
+    </td>
+  </tr>
   <tr>
     <td>1.5.0</td>
     <td>2026-08-26</td>
diff --git a/libraries/microsoft-agents-hosting-aiohttp/readme.md b/libraries/microsoft-agents-hosting-aiohttp/readme.md
index 29dedf862..be8c5773d 100644
--- a/libraries/microsoft-agents-hosting-aiohttp/readme.md
+++ b/libraries/microsoft-agents-hosting-aiohttp/readme.md
@@ -17,6 +17,15 @@ This library is part of the **Microsoft 365 Agents SDK for Python** - a comprehe
     <th style="width:20%">Date</th>
     <th style="width:60%">Release Notes</th>
   </tr>
+  <tr>
+    <td>1.7.0</td>
+    <td>2026-09-17</td>
+    <td>
+      <a href="https://github.com/microsoft/Agents-for-python/blob/main/changelog.md#microsoft-365-agents-sdk-for-python---release-notes-v170">
+        1.7.0 Release Notes
+      </a>
+    </td>
+  </tr>
   <tr>
     <td>1.5.0</td>
     <td>2026-08-26</td>
diff --git a/libraries/microsoft-agents-hosting-core/readme.md b/libraries/microsoft-agents-hosting-core/readme.md
index d506501ef..e0e114afa 100644
--- a/libraries/microsoft-agents-hosting-core/readme.md
+++ b/libraries/microsoft-agents-hosting-core/readme.md
@@ -16,6 +16,15 @@ This library is part of the **Microsoft 365 Agents SDK for Python** - a comprehe
     <th style="width:20%">Date</th>
     <th style="width:60%">Release Notes</th>
   </tr>
+  <tr>
+    <td>1.7.0</td>
+    <td>2026-09-17</td>
+    <td>
+      <a href="https://github.com/microsoft/Agents-for-python/blob/main/changelog.md#microsoft-365-agents-sdk-for-python---release-notes-v170">
+        1.7.0 Release Notes
+      </a>
+    </td>
+  </tr>
   <tr>
     <td>1.5.0</td>
     <td>2026-08-26</td>
diff --git a/libraries/microsoft-agents-hosting-dialogs/readme.md b/libraries/microsoft-agents-hosting-dialogs/readme.md
index 1a8c23087..fe99fddb9 100644
--- a/libraries/microsoft-agents-hosting-dialogs/readme.md
+++ b/libraries/microsoft-agents-hosting-dialogs/readme.md
@@ -18,6 +18,15 @@ This library is part of the **Microsoft 365 Agents SDK for Python** - a comprehe
     <th style="width:20%">Date</th>
     <th style="width:60%">Release Notes</th>
   </tr>
+  <tr>
+    <td>1.7.0</td>
+    <td>2026-09-17</td>
+    <td>
+      <a href="https://github.com/microsoft/Agents-for-python/blob/main/changelog.md#microsoft-365-agents-sdk-for-python---release-notes-v170">
+        1.7.0 Release Notes
+      </a>
+    </td>
+  </tr>
   <tr>
     <td>1.5.0</td>
     <td>2026-08-26</td>
diff --git a/libraries/microsoft-agents-hosting-fastapi/readme.md b/libraries/microsoft-agents-hosting-fastapi/readme.md
index c6e9e0709..6252d31db 100644
--- a/libraries/microsoft-agents-hosting-fastapi/readme.md
+++ b/libraries/microsoft-agents-hosting-fastapi/readme.md
@@ -9,6 +9,15 @@ This library provides FastAPI integration for Microsoft Agents, enabling you to
     <th style="width:20%">Date</th>
     <th style="width:60%">Release Notes</th>
   </tr>
+  <tr>
+    <td>1.7.0</td>
+    <td>2026-09-17</td>
+    <td>
+      <a href="https://github.com/microsoft/Agents-for-python/blob/main/changelog.md#microsoft-365-agents-sdk-for-python---release-notes-v170">
+        1.7.0 Release Notes
+      </a>
+    </td>
+  </tr>
   <tr>
     <td>1.5.0</td>
     <td>2026-08-26</td>
diff --git a/libraries/microsoft-agents-hosting-msteams/readme.md b/libraries/microsoft-agents-hosting-msteams/readme.md
index aa4a95e36..b9581bbbc 100644
--- a/libraries/microsoft-agents-hosting-msteams/readme.md
+++ b/libraries/microsoft-agents-hosting-msteams/readme.md
@@ -18,6 +18,15 @@ This library is part of the **Microsoft 365 Agents SDK for Python** — a compre
     <th style="width:20%">Date</th>
     <th style="width:60%">Release Notes</th>
   </tr>
+  <tr>
+    <td>1.7.0</td>
+    <td>2026-09-17</td>
+    <td>
+      <a href="https://github.com/microsoft/Agents-for-python/blob/main/changelog.md#microsoft-365-agents-sdk-for-python---release-notes-v170">
+        1.7.0 Release Notes
+      </a>
+    </td>
+  </tr>
   <tr>
     <td>1.5.0</td>
     <td>2026-08-26</td>
diff --git a/libraries/microsoft-agents-hosting-slack/readme.md b/libraries/microsoft-agents-hosting-slack/readme.md
index 8b2446a1b..47419e2cf 100644
--- a/libraries/microsoft-agents-hosting-slack/readme.md
+++ b/libraries/microsoft-agents-hosting-slack/readme.md
@@ -13,6 +13,15 @@ Integration library for building Slack agents using the Microsoft 365 Agents SDK
     <th style="width:20%">Date</th>
     <th style="width:60%">Release Notes</th>
   </tr>
+  <tr>
+    <td>1.7.0</td>
+    <td>2026-09-17</td>
+    <td>
+      <a href="https://github.com/microsoft/Agents-for-python/blob/main/changelog.md#microsoft-365-agents-sdk-for-python---release-notes-v170">
+        1.7.0 Release Notes
+      </a>
+    </td>
+  </tr>
   <tr>
     <td>1.5.0</td>
     <td>2026-08-26</td>
diff --git a/libraries/microsoft-agents-hosting-teams/readme.md b/libraries/microsoft-agents-hosting-teams/readme.md
index a1ae4da03..dd9be8b7a 100644
--- a/libraries/microsoft-agents-hosting-teams/readme.md
+++ b/libraries/microsoft-agents-hosting-teams/readme.md
@@ -18,6 +18,15 @@ This library is part of the **Microsoft 365 Agents SDK for Python** - a comprehe
     <th style="width:20%">Date</th>
     <th style="width:60%">Release Notes</th>
   </tr>
+  <tr>
+    <td>1.7.0</td>
+    <td>2026-09-17</td>
+    <td>
+      <a href="https://github.com/microsoft/Agents-for-python/blob/main/changelog.md#microsoft-365-agents-sdk-for-python---release-notes-v170">
+        1.7.0 Release Notes
+      </a>
+    </td>
+  </tr>
   <tr>
     <td>1.5.0</td>
     <td>2026-08-26</td>
diff --git a/libraries/microsoft-agents-storage-blob/readme.md b/libraries/microsoft-agents-storage-blob/readme.md
index bce07ff87..bfa41490f 100644
--- a/libraries/microsoft-agents-storage-blob/readme.md
+++ b/libraries/microsoft-agents-storage-blob/readme.md
@@ -16,6 +16,15 @@ This library is part of the **Microsoft 365 Agents SDK for Python** - a comprehe
     <th style="width:20%">Date</th>
     <th style="width:60%">Release Notes</th>
   </tr>
+  <tr>
+    <td>1.7.0</td>
+    <td>2026-09-17</td>
+    <td>
+      <a href="https://github.com/microsoft/Agents-for-python/blob/main/changelog.md#microsoft-365-agents-sdk-for-python---release-notes-v170">
+        1.7.0 Release Notes
+      </a>
+    </td>
+  </tr>
   <tr>
     <td>1.5.0</td>
     <td>2026-08-26</td>
diff --git a/libraries/microsoft-agents-storage-cosmos/readme.md b/libraries/microsoft-agents-storage-cosmos/readme.md
index c6f7f26b5..5a3b33810 100644
--- a/libraries/microsoft-agents-storage-cosmos/readme.md
+++ b/libraries/microsoft-agents-storage-cosmos/readme.md
@@ -16,6 +16,15 @@ This library is part of the **Microsoft 365 Agents SDK for Python** - a comprehe
     <th style="width:20%">Date</th>
     <th style="width:60%">Release Notes</th>
   </tr>
+  <tr>
+    <td>1.7.0</td>
+    <td>2026-09-17</td>
+    <td>
+      <a href="https://github.com/microsoft/Agents-for-python/blob/main/changelog.md#microsoft-365-agents-sdk-for-python---release-notes-v170">
+        1.7.0 Release Notes
+      </a>
+    </td>
+  </tr>
   <tr>
     <td>1.5.0</td>
     <td>2026-08-26</td>
diff --git a/libraries/microsoft-agents-testing/readme.md b/libraries/microsoft-agents-testing/readme.md
index 02234c347..8725804af 100644
--- a/libraries/microsoft-agents-testing/readme.md
+++ b/libraries/microsoft-agents-testing/readme.md
@@ -15,6 +15,15 @@ or token service.
     <th style="width:20%">Date</th>
     <th style="width:60%">Release Notes</th>
   </tr>
+  <tr>
+    <td>1.7.0</td>
+    <td>2026-09-17</td>
+    <td>
+      <a href="https://github.com/microsoft/Agents-for-python/blob/main/changelog.md#microsoft-365-agents-sdk-for-python---release-notes-v170">
+        1.7.0 Release Notes
+      </a>
+    </td>
+  </tr>
   <tr>
     <td>1.5.0</td>
     <td>2026-08-26</td>