diff --git a/Release_Notes.txt b/Release_Notes.txt
index 768e1f715..01681f6c4 100644
--- a/Release_Notes.txt
+++ b/Release_Notes.txt
@@ -14,7 +14,7 @@ Copyright 2001 - 2018 by Joe Taylor, K1JT.
 
 
 		Release: WSJT-X Version 1.9.0-rc4
-		         April 23, 2018
+		         April 30, 2018
 		---------------------------------
 
 Changes from WSJT-X Version 1.9.0-rc3 include the following:
@@ -22,8 +22,6 @@ Changes from WSJT-X Version 1.9.0-rc3 include the following:
 - Corrected a number of flaws in Fox and Hound behavior, FT8
   DXpedition Mode
 
-- Updated copy of cty.dat
-
 - Decoded CQ calls where a prefix has been used as a suffix should
   have the DXCC entity name assigned correctly in almost all cases
 
@@ -38,8 +36,13 @@ Changes from WSJT-X Version 1.9.0-rc3 include the following:
 - Main-screen geometry and state of the "splitter" setting between its
   two text windows is now properly restored after program restart.
 
+- New simulator jt49sim[.exe] replaces jt4sim and jt9sim
+
+- Correct S/N measurements for the JT9 slow/wide submodes
+
 - Other minor bug fixes
 
+- Updated copy of cty.dat
 
 
 		Release: WSJT-X Version 1.9.0-rc3