doc: update CHANGELOG.md

Author: opqdonut

CHANGELOG.md

@@ -14,9 +14,11 @@ We use [Break Versioning][breakver]. The version numbers follow a `<major>.<mino
 
 Malli is in well matured [alpha](README.md#alpha).
 
-## 
+## UNRELEASED
 
 * Docs: elaborate optional-keys and required-keys [#1117](https://github.com/metosin/malli/pull/1117)
+* **BREAKING** Output of `parse` now uses new `malli.core.Tag` and `malli.core.Tags` records for `:orn`, `:multi`, `:altn`, `:catn` etc. [#1123](https://github.com/metosin/malli/issues/1123) [#1153](https://github.com/metosin/malli/issues/1153)
+  * See [Parsing](#parsing-values) and [Unparsing](#unparsing-values) for docs.
 
 ## 0.17.0 (2024-12-08)