diff --git a/RELEASENOTES.md b/RELEASENOTES.md
index 794cf5ea..2d508500 100644
--- a/RELEASENOTES.md
+++ b/RELEASENOTES.md
@@ -1,5 +1,7 @@
-Version 3.2d11
+Version 3.2d12
 ====
+Experimenting with an [MPRIS](https://specifications.freedesktop.org/mpris-spec/latest/)-compatible D-Bus interface. A very small number of features have a tentative implementation. As with the Shairport Sync D-Bus interface, please note that the implementation is likely to change greatly or be removed at any time.
+
 Continuing the experiments with D-Bus support, Shairport Sync can now be compiled to have a D-Bus presence on the D-Bus system bus. It presents a small number of properties and can execute a method call which sends a command string to the audio source's DACP port. As before, please note that the implementation is likely to change greatly or be removed at any time.
 
 **Enhancement**