Documentation for generalised DFC

Change-Id: Ic240ebf83c58b2f0dd231bd3933838614f716ff8
Issue-ID: DCAEGEN2-1662
Signed-off-by: maximesson <maxime.bonneau@est.tech>
diff --git a/docs/sections/services/dfc/release-notes.rst b/docs/sections/services/dfc/release-notes.rst
index a0277d8..0025b83 100644
--- a/docs/sections/services/dfc/release-notes.rst
+++ b/docs/sections/services/dfc/release-notes.rst
@@ -4,6 +4,12 @@
 Release Notes
 =============
 
+Version 1.2.1
+-------------
+
+The DFC is now generalized: it can handle any kind of files, not only PM files.
+
+
 Version 1.1.3
 -------------