diff --git a/relnotes/5.7 b/relnotes/5.7
--- a/relnotes/5.7
+++ b/relnotes/5.7
@@ -17,9 +17,6 @@
    can be e.g. `rebase`. As part of this effort, the default format
    from `hg rebase` was reorganized a bit.
 
- * `hg strip`, from the strip extension, is now a core command, `hg
-   debugstrip`. The extension remains for compatibility.
-
  * `hg diff` and `hg extdiff` now support `--from <rev>` and `--to <rev>`
    arguments as clearer alternatives to `-r <revs>`. `-r <revs>` has been
    deprecated.