diff --git a/Release-Notes.md b/Release-Notes.md
index baef49e..35d0309 100644
--- a/Release-Notes.md
+++ b/Release-Notes.md
@@ -1,3 +1,20 @@
+### v1.4.0 (not yet released)
+* Fixed [#17](https://github.com/Sigmanor/Crypto-Notepad/issues/17)
+* Fixed [#18](https://github.com/Sigmanor/Crypto-Notepad/issues/18)
+* Added `Redo` function in to editor.
+* Reworked `Undo` function.
+* ...
+
+***For developers***
+* Added debug menu.
+* Source code now is more readable.
+* Source code now is grouped by sections.
+* All elements and variables now have more clear names (no more `button1` `textBox2` names and etc).
+* Сhanged work logic of most functions.
+* ...
+
+***
+
 ### v1.3.0 (2018-12-20)
 * Optional integration with windows context menu [#11](https://github.com/Sigmanor/Crypto-Notepad/issues/11) [#12](https://github.com/Sigmanor/Crypto-Notepad/issues/12)
 * Changed eye icon ![eye icon](https://i.imgur.com/5iz4oCx.png) behavior.