diff --git a/development/FORMAT b/development/FORMAT
index 11acdfc99f..b60e29410b 100644
--- a/development/FORMAT
+++ b/development/FORMAT
@@ -16,6 +16,13 @@ changes happened in particular if possible. A good example would be
 	  structure)
 	- Support \expreamble and \subexpreamble macros
 
+2023-06-11 Enrico Forestieri <forenr@lyx.org>
+	* Format incremented to 616: Do not output LaTeX for a macro if the LaTeX part is empty
+
+2023-04-02 Jürgen Spitzmüller <spitz@lyx.org> 
+	* Format incremented to 615: Unifiy spelling of "acknowledgment" styles
+	  (using US spelling throughout)
+
 2022-12-25 Richard Kimberly Heck <rikiheck@lyx.org>
 	* Format incremented to 614: New "Other" type for hyperlinks