diff --git a/Changelog.txt b/Changelog.txt
index 5f5a7c0700..4a638ac4ee 100644
--- a/Changelog.txt
+++ b/Changelog.txt
@@ -6,7 +6,7 @@
 # to the ticket list.
 # Also, each release can have new and improved recipes.
 
-# {{{ 5.x.0 2022-xx-xx
+# {{{ 6.x.0 2022-xx-xx
 #
 # :: new features
 #
@@ -23,6 +23,23 @@
 # - title by author
 # }}}
 
+{{{ 6.0.0 2022-07-11
+:: new features
+
+- [major] For details on the major changes in calibre between 6.0 and 5.0, see https://calibre-ebook.com/new-in/fifteen
+
+- [major] Full text search: You can now search the entire text of all books in your calibre library
+
+- [major] Support for new CPU architectures: Apple Silicon and ARM64 on Linux. Support for 32bit CPUs has been dropped because Qt 6 does not support them
+
+- Dark mode in calibre is now controlled via a setting in Preferences->Look & feel rather than an environment variable
+
+- Allow choosing different icon themes for light and dark mode in Preferences->Look & feel
+
+- Upgrade calibre to use Qt 6. This means that some no longer maintained third party plugins may not work, though most plugins have already been ported
+
+}}}
+
 {{{ 5.44.0 2022-06-17
 
 :: new features
diff --git a/src/calibre/constants.py b/src/calibre/constants.py
index fb191901e7..513154a8fa 100644
--- a/src/calibre/constants.py
+++ b/src/calibre/constants.py
@@ -5,7 +5,7 @@ from functools import lru_cache
 import sys, locale, codecs, os, collections, collections.abc
 
 __appname__   = 'calibre'
-numeric_version = (5, 99, 12)
+numeric_version = (6, 0, 0)
 __version__   = '.'.join(map(str, numeric_version))
 git_version   = None
 __author__    = "Kovid Goyal <kovid@kovidgoyal.net>"