diff --git a/relnotes/next b/relnotes/next
--- a/relnotes/next
+++ b/relnotes/next
@@ -14,6 +14,15 @@
 
  * `hg copy --forget` can be used to unmark a file as copied.
 
+ * The `format.revlog-compression` configuration entry now accept a list. The
+   first available option will be used. for example setting::
+
+     [format]
+     revlog-compression=zstd, zlib
+
+   Will use `zstd` compression for new repositories is available, and will
+   simply fall back to `zlib` if not.
+
 == New Experimental Features ==
 
  * `hg copy` now supports a `--at-rev` argument to mark files as