diff --git a/RELEASENOTES-DEVELOPMENT.md b/RELEASENOTES-DEVELOPMENT.md
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@@ -1,3 +1,11 @@
+Version 3.3.3d9
+====
+
+**Enhamcements**
+* Expose two `metadata` settings related to handling cover art:
+  1. The setting `cover_art_cache_directory` allows you to specify where cover art files will be cached if Shairport Sync has been built with native D-Bus, MPRIS or MQTT support. The default is `/tmp/shairport-sync/.cache/coverart`. If you set it to an empty list: `""`, caching is disabled. This might be useful in, say, an embedded device, or wherever you want to minimise file writing.
+  2. The setting `retain_cover_art` is normally set to `"no"` so that cover art cache files are deleted when no longer needed. Set it `"yes"` to retain them permanently. Be aware that cover art files might take up considerable space after a while.
+
 Version 3.3.3d8
 ====