--- a/testing/geckodriver/CHANGES.md
+++ b/testing/geckodriver/CHANGES.md
@@ -2,20 +2,30 @@ Change log
 ==========
 
 All notable changes to this program is documented in this file.
 
 
 Unreleased
 ----------
 
+Note that with geckodriver 'next' the following versions are recommended:
+- Firefox 56.0 (and greater)
+- Selenium 3.11 (and greater)
+
 ### Added
 
 - Support for the new chrome element identifier in Marionette.
 
+### Changed
+
+- Updated mapping of all supported commands to the new prefixed commands
+  in Marionette, whereby all WebDriver specific commands make use of the
+  `WebDriver:` prefix.
+
 
 0.20.1 (2018-04-06)
 -------------------
 
 ### Fixed
 
 - Avoid attempting to kill Firefox process that has stopped.