diff --git a/NEWS b/NEWS
index a90ced87..bd3722af 100644
--- a/NEWS
+++ b/NEWS
@@ -67,7 +67,8 @@ xbps-0.38 (???):
    which are providing/replacing the "awk" virtual package.
 
  * libxbps: add support for handling vcdiff files generated by xdelta. This is
-   currently used with repo_sync.
+   currently used to download and apply binary diffs for repository data, iff
+   xdelta3 binary is available.
 
  * libfetch: synchronized with NetBSD pkgsrc/libfetch.