Start changelog for 2.16

CHANGELOG.txt

@@ -1,6 +1,12 @@
 Changelog
 =========
 
+2.16 (xx.xx.xxxx) - IN DEVELOPMENT
+~~~~~~~~~~~~~~~~~
+
+ * ...
+
+
 2.15 LTS (xx.xx.xxxx) - IN DEVELOPMENT
 ~~~~~~~~~~~~~~~~~~~~~
 

docs/releases/2.16.md

@@ -0,0 +1,22 @@
+# Wagtail 2.16 release notes - IN DEVELOPMENT
+
+```eval_rst
+.. contents::
+    :local:
+    :depth: 1
+```
+
+## What's new
+
+
+### Other features
+
+ * ...
+
+
+### Bug fixes
+
+ * ...
+
+
+## Upgrade considerations

docs/releases/index.rst

@@ -5,6 +5,7 @@ Release notes
    :maxdepth: 1
 
    upgrading
+   2.16
    2.15
    2.14.2
    2.14.1

docs/releases/upgrading.rst

@@ -147,3 +147,5 @@ The compatible versions of Django and Python for each Wagtail release are:
 +-------------------+------------------------------+-----------------------------+
 | 2.15 LTS          | 3.0, 3.1, 3.2                | 3.6, 3.7, 3.8, 3.9, 3.10    |
 +-------------------+------------------------------+-----------------------------+
+| 2.16              | 3.0, 3.1, 3.2                | 3.6, 3.7, 3.8, 3.9, 3.10    |
++-------------------+------------------------------+-----------------------------+