diff --git a/CHANGES.txt b/CHANGES.txt
index c78fdc395..b8a6424d4 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -1,6 +1,58 @@
 Apptools CHANGELOG
 ==================
 
+Version 5.0.0
+~~~~~~~~~~~~~
+
+Released : DD MM YYYY
+
+This is a major release mainly relating to code modernization. In this release,
+support for Python versions < 3.6 have been dropped. Numerous dated
+sub-packages and code fragments have been removed. Additionally, there were
+various fixes and documentation updates.
+
+Fixes
+-----
+* Fix SyntaxWarning in persistence.file_path (#116)
+* Fix container items change event being saved in preferences (#196)
+* Fix synchronizing preference trait with name *_items (#226)
+
+Deprecations
+------------
+* Deprecate apptools.undo subpackage (undo was moved to pyface) (#250)
+
+Removals
+--------
+* Remove ``appscripting`` subpackage (#172)
+* Remove ``template`` subpackage (#173)
+* Remove ``permission`` subpackage (#175)
+* Remove ``lru_cache`` subpackage (#184)
+* Remove support for Python 2.7 and 3.5 (#190)
+* Remove the ``apptools.sweet_pickle`` subpackage.  Note that users of
+  sweet_pickle can in some cases transition to using ``apptools.persistence``
+  and pickle from the python standard library (see changes made in this PR to
+  ``apptools.naming`` for more info) (#199)
+* Remove ``help`` subpackage (#215)
+* Remove NullHandler from ``apptools.logger`` (#216)
+* Remove ``apptools.logger.filtering_handler`` and ``apptools.logger.util`` submodules (#217)
+* Remove deprecated create_log_file_handler function (#218)
+* Remove use of ``apptools.type_manager`` from ``apptools.naming``. Then,
+  remove ``apptools.type_manager`` entirely.  Finally, remove
+  ``apptools.naming.adapter``. (#219)
+* Remove ``apptools.persistence.spickle`` submodule (#220)
+* Remove ``apptools.naming.ui`` sub package (#233)
+
+Documentation changes
+---------------------
+* Update documentation for Preferences (#198)
+* Add a brief section to documentation for ``apptools.naming`` (#221)
+* Document the ``apptools.io`` and ``apptools.io.h5`` sub packages (#237)
+* Fix a few broken links in the documentation (#248)
+
+Test suite
+----------
+* Fix AttributeError on Python 3.9 due to usage of ``base64.decodestring`` in tests (#210)
+
 Version 4.5.0
 ~~~~~~~~~~~~~
 
diff --git a/docs/releases/upcoming/116.bugfix.rst b/docs/releases/upcoming/116.bugfix.rst
deleted file mode 100644
index f1a3b5f7c..000000000
--- a/docs/releases/upcoming/116.bugfix.rst
+++ /dev/null
@@ -1 +0,0 @@
-Fix SyntaxWarning in persistence.file_path (#116)
\ No newline at end of file
diff --git a/docs/releases/upcoming/172.removal.rst b/docs/releases/upcoming/172.removal.rst
deleted file mode 100644
index 55d27c85b..000000000
--- a/docs/releases/upcoming/172.removal.rst
+++ /dev/null
@@ -1 +0,0 @@
-Remove ``appscripting`` subpackage (#172)
\ No newline at end of file
diff --git a/docs/releases/upcoming/173.removal.rst b/docs/releases/upcoming/173.removal.rst
deleted file mode 100644
index ad09cb6d0..000000000
--- a/docs/releases/upcoming/173.removal.rst
+++ /dev/null
@@ -1 +0,0 @@
-Remove ``template`` subpackage (#173)
\ No newline at end of file
diff --git a/docs/releases/upcoming/175.removal.rst b/docs/releases/upcoming/175.removal.rst
deleted file mode 100644
index 81677f17a..000000000
--- a/docs/releases/upcoming/175.removal.rst
+++ /dev/null
@@ -1 +0,0 @@
-Remove ``permission`` subpackage (#175)
\ No newline at end of file
diff --git a/docs/releases/upcoming/184.removal.rst b/docs/releases/upcoming/184.removal.rst
deleted file mode 100644
index 8d0deb508..000000000
--- a/docs/releases/upcoming/184.removal.rst
+++ /dev/null
@@ -1 +0,0 @@
-Remove ``lru_cache`` subpackage (#184)
\ No newline at end of file
diff --git a/docs/releases/upcoming/190.removal.rst b/docs/releases/upcoming/190.removal.rst
deleted file mode 100644
index c0247c4db..000000000
--- a/docs/releases/upcoming/190.removal.rst
+++ /dev/null
@@ -1 +0,0 @@
-Remove support for Python 2.7 and 3.5 (#190)
\ No newline at end of file
diff --git a/docs/releases/upcoming/196.bugfix.rst b/docs/releases/upcoming/196.bugfix.rst
deleted file mode 100644
index 0c12dfeb0..000000000
--- a/docs/releases/upcoming/196.bugfix.rst
+++ /dev/null
@@ -1 +0,0 @@
-Fix container items change event being saved in preferences (#196)
\ No newline at end of file
diff --git a/docs/releases/upcoming/198.doc.rst b/docs/releases/upcoming/198.doc.rst
deleted file mode 100644
index ce7d823db..000000000
--- a/docs/releases/upcoming/198.doc.rst
+++ /dev/null
@@ -1 +0,0 @@
-Update documentation for Preferences (#198)
\ No newline at end of file
diff --git a/docs/releases/upcoming/199.removal.rst b/docs/releases/upcoming/199.removal.rst
deleted file mode 100644
index b556dc7bf..000000000
--- a/docs/releases/upcoming/199.removal.rst
+++ /dev/null
@@ -1,4 +0,0 @@
-remove the ``apptools.sweet_pickle`` subpackage.  Note that users of
-sweet_pickle can in some cases transition to using ``apptools.persistence`` and
-pickle from the python standard library (see changes made in this PR to
-``apptools.naming`` for more info) (#199)
\ No newline at end of file
diff --git a/docs/releases/upcoming/210.test.rst b/docs/releases/upcoming/210.test.rst
deleted file mode 100644
index 867cb2111..000000000
--- a/docs/releases/upcoming/210.test.rst
+++ /dev/null
@@ -1 +0,0 @@
-Fix AttributeError on Python 3.9 due to usage of ``base64.decodestring`` in tests (#210)
\ No newline at end of file
diff --git a/docs/releases/upcoming/215.removal.rst b/docs/releases/upcoming/215.removal.rst
deleted file mode 100644
index 86cd1386b..000000000
--- a/docs/releases/upcoming/215.removal.rst
+++ /dev/null
@@ -1 +0,0 @@
-Remove ``help`` subpackage (#215)
\ No newline at end of file
diff --git a/docs/releases/upcoming/216.removal.rst b/docs/releases/upcoming/216.removal.rst
deleted file mode 100644
index 19b0d26a4..000000000
--- a/docs/releases/upcoming/216.removal.rst
+++ /dev/null
@@ -1 +0,0 @@
-remove NullHandler from ``apptools.logger`` (#216)
\ No newline at end of file
diff --git a/docs/releases/upcoming/217.removal.rst b/docs/releases/upcoming/217.removal.rst
deleted file mode 100644
index 273174c7a..000000000
--- a/docs/releases/upcoming/217.removal.rst
+++ /dev/null
@@ -1 +0,0 @@
-Remove ``apptools.logger.filtering_handler`` and ``apptools.logger.util`` submodules (#217)
\ No newline at end of file
diff --git a/docs/releases/upcoming/218.removal.rst b/docs/releases/upcoming/218.removal.rst
deleted file mode 100644
index 070bf361f..000000000
--- a/docs/releases/upcoming/218.removal.rst
+++ /dev/null
@@ -1 +0,0 @@
-Remove deprecated create_log_file_handler function (#218)
\ No newline at end of file
diff --git a/docs/releases/upcoming/219.removal.rst b/docs/releases/upcoming/219.removal.rst
deleted file mode 100644
index 56c4e0a04..000000000
--- a/docs/releases/upcoming/219.removal.rst
+++ /dev/null
@@ -1 +0,0 @@
-Remove use of ``apptools.type_manage`r`` from ``apptools.naming``.  Then, remove ``apptools.type_manager`` entirely.  Finally, remove ``apptools.naming.adapter``. (#219)
\ No newline at end of file
diff --git a/docs/releases/upcoming/220.removal.rst b/docs/releases/upcoming/220.removal.rst
deleted file mode 100644
index 3ff4e85aa..000000000
--- a/docs/releases/upcoming/220.removal.rst
+++ /dev/null
@@ -1 +0,0 @@
-Remove ``apptools.persistence.spickle.py`` submodule (#220)
\ No newline at end of file
diff --git a/docs/releases/upcoming/221.doc.rst b/docs/releases/upcoming/221.doc.rst
deleted file mode 100644
index 0ba971c94..000000000
--- a/docs/releases/upcoming/221.doc.rst
+++ /dev/null
@@ -1 +0,0 @@
-Add a brief section to documentation for ``apptools.naming`` (#221)
\ No newline at end of file
diff --git a/docs/releases/upcoming/226.bugfix.rst b/docs/releases/upcoming/226.bugfix.rst
deleted file mode 100644
index 2d23f3a51..000000000
--- a/docs/releases/upcoming/226.bugfix.rst
+++ /dev/null
@@ -1 +0,0 @@
-Fix synchronizing preference trait with name *_items (#226)
\ No newline at end of file
diff --git a/docs/releases/upcoming/233.removal.rst b/docs/releases/upcoming/233.removal.rst
deleted file mode 100644
index 89d0d8c48..000000000
--- a/docs/releases/upcoming/233.removal.rst
+++ /dev/null
@@ -1 +0,0 @@
-Remove ``apptools.naming.ui`` sub package (#233)
\ No newline at end of file
diff --git a/docs/releases/upcoming/237.doc.rst b/docs/releases/upcoming/237.doc.rst
deleted file mode 100644
index 557595c8c..000000000
--- a/docs/releases/upcoming/237.doc.rst
+++ /dev/null
@@ -1 +0,0 @@
-Document the ``apptools.io`` and ``apptools.io.h5`` sub packages (#237)
\ No newline at end of file
diff --git a/docs/releases/upcoming/248.doc.rst b/docs/releases/upcoming/248.doc.rst
deleted file mode 100644
index 6c0255d3b..000000000
--- a/docs/releases/upcoming/248.doc.rst
+++ /dev/null
@@ -1 +0,0 @@
-Fix a few broken links in the documentation (#248)
\ No newline at end of file
diff --git a/docs/releases/upcoming/250.deprecation.rst b/docs/releases/upcoming/250.deprecation.rst
deleted file mode 100644
index 4a8e2b8a3..000000000
--- a/docs/releases/upcoming/250.deprecation.rst
+++ /dev/null
@@ -1 +0,0 @@
-Deprecate apptools.undo subpackage (undo was moved to pyface) (#250)