doc: update _preparation_next_release
@@ -187,6 +187,7 @@ you up to date with the multi-language support provided by Elektra.
- Warnings about cmake policies are avoided. _(Markus Raab)_
- We removed the Haskell and GI bindings. _(Markus Raab)_
+- Avoid unnecessary copying std::string where possible (setString and setMeta only). _(Manuel Mausz)_
### Java
