diff --git a/docs/changelog.rst b/docs/changelog.rst
index acb94e3d..92ec3707 100644
--- a/docs/changelog.rst
+++ b/docs/changelog.rst
@@ -4,6 +4,23 @@ Changelog
 
 This changelog is used to track all major changes to Mopidy.
 
+v0.18.0 (Unreleased)
+====================
+
+**Pluggable libraries**
+
+Fixes issues :issue:`44`, partially resolves :issue:`397`, and causes
+a temporary regression of :issue:`527`.
+
+- Finished the work on creating pluggable libraries. Users can now
+  reconfigure mopidy to use alternate library providers of their choosing
+  for local files.
+- Switched default library provider to JSON. This greatly simplifies our
+  library code and reuses or existing serialisation code.
+- Killed our outdated and bug-ridden tag cache implementation.
+- Added support for deprecated config values in order to allow for
+  graceful removal of :confval:`local/tag_cache_file`
+
 
 v0.17.0 (2013-11-23)
 ====================