--- a/relnotes/next	Sat Nov 28 22:27:12 2020 +0100
+++ b/relnotes/next	Thu Dec 17 13:33:27 2020 -0500
@@ -37,6 +37,8 @@
    is also supported by "premerge" as
    `merge-tools.<tool>.premerge=keep-mergediff`.
 
+ * External hooks are now called with `HGPLAIN=1` preset.
+
 == New Experimental Features ==
 
 * `experimental.single-head-per-branch:public-changes-only` can be used