runtime(doc): document new GTK4 GUI in version9.txt

Signed-off-by: Christian Brabandt <cb@256bit.org>

diff --git a/runtime/doc/version9.txt b/runtime/doc/version9.txt
index 846d2dfa23d674ca387ad7c2823cd259cc086a9d..1e7d1c71356ca07de919e05d1fd944afcdb07e23 100644 (file)
--- a/runtime/doc/version9.txt
+++ b/runtime/doc/version9.txt
@@ -1,4 +1,4 @@
-*version9.txt* For Vim version 9.2.  Last change: 2026 May 17
+*version9.txt* For Vim version 9.2.  Last change: 2026 May 19
 
 
                  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -52585,6 +52585,11 @@ VERSION 9.3                            *version-9.3* *version9.3* *vim-9.3*
 This section is about improvements made between version 9.2 and 9.3 and is
 work in progress.
 
+GUI ~
+-----
+- Added support for the GTK 4 GUI (via patch 9.2.0501).  Enable with
+  `--enable-gui=gtk4` configure switch at build time.
+
 Popups ~
 ------
 - Support for transparency, see |popup-opacity|.