docs: Note release date of 1.9.3

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
diff --git a/docs/Releases.md b/docs/Releases.md
index 784e76c..600aa50 100644
--- a/docs/Releases.md
+++ b/docs/Releases.md
@@ -30,6 +30,11 @@
 
 Available on 20160422. Stable release containing only bug fixes.
 
+SeaBIOS 1.9.3
+-------------
+
+Available on 20160701. Stable release containing only bug fixes.
+
 SeaBIOS 1.8.0
 =============