Add release note sections for 2.10.1

CHANGELOG.txt

@@ -14,6 +14,10 @@ Changelog
  * Fix: Update oEmbed endpoints to use https where available (Matt Westcott)
 
 
+2.10.1 (xx.xx.xxxx) - IN DEVELOPMENT
+~~~~~~~~~~~~~~~~~~~
+
+
 2.10 (11.08.2020)
 ~~~~~~~~~~~~~~~~~
 

docs/releases/2.10.1.rst

@@ -0,0 +1,15 @@
+=============================================
+Wagtail 2.10.1 release notes - IN DEVELOPMENT
+=============================================
+
+.. contents::
+    :local:
+    :depth: 1
+
+
+What's new
+==========
+
+Bug fixes
+~~~~~~~~~
+

docs/releases/index.rst

@@ -6,6 +6,7 @@ Release notes
 
    upgrading
    2.11
+   2.10.1
    2.10
    2.9.3
    2.9.2