diff --git a/Release_Notes.txt b/Release_Notes.txt
index e4c155936..482c2a3e0 100644
--- a/Release_Notes.txt
+++ b/Release_Notes.txt
@@ -11,8 +11,8 @@
                                                          
 Copyright 2001 - 2021 by Joe Taylor, K1JT.
 
-	        Release: WSJT-X 2.4.0-rc3
-	               Mar 20, 2021
+	        Release: WSJT-X 2.4.0-rc4
+	               Mar 21, 2021
 	        -------------------------
 
 WSJT-X 2.4.0 Release Candidate 4 adds new Q65 mode functionality and
@@ -23,21 +23,21 @@ discovered in the RC3 and v2.3.0 GA releases.
    Q65-120x and Q65-300x.
 
  - Audio frequency and decoded message are now saved for up to 100
-   of the most recent Q65 decodes.  Subsequent double-click on
-   waterfall will search the list for that frequency +/- 10 Hz,
-   recover "DXCall" from the mosr recent decode there, and attempt
-   a q3-type decode at that frequency.
+   most recent Q65 decodes.  Subsequent double-click on waterfall will
+   search the list for the clicked frequency +/- 10 Hz, recover
+   "DXCall" from the mosr recent decode there, and attempt a decode at
+   that frequency with full "q3" sensitivity.
 
- - Use new ADIF recommendations for Q65: mode=MSK, submode=Q65.
+ - Use new ADIF recommendations for Q65: mode=MFSK, submode=Q65.
 
- - If "Single decode" is unchecked, ;ook for Q65 decodes from
+ - If "Single decode" is unchecked, look for Q65 decodes from
    accumulated average even after obtaining a single-sequence
    decode at selected Rx Freq.
 
- - Display original UTC (derived from file name) on the waterfall,
-   for data read from .wav files.
-
- - Corrected several bounds errors caused by unusual settings on
+ - For data read from .wav files, display the original UTC (derived
+   from file name) on the waterfall instead of current UTC.
+   
+ - Protect against bounds errors caused by unusual settings on the
    Wide Graph.
 
  - Correct a problem with Split operation in FT4 mode.  Thanks to