diff --git a/CHANGELOG.md b/CHANGELOG.md
index 128d42a4..f0123f53 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,14 @@
 # HCL Changelog
 
-## v2.15.1 (Unreleased)
+## v2.16.0 (Unreleased)
+
+### Bugs Fixed
+
+* ext/typeexpr: Modify the `Defaults` functionality to implement additional flexibility. HCL will now upcast lists and sets into tuples, and maps into objects, when applying default values if the applied defaults cause the elements within a target collection to have differing types. Previously, this would have resulted in a panic, now HCL will return a modified overall type. ([#574](https://github.com/hashicorp/hcl/pull/574))
+
+### Enhancements
+
+* ext/typeexpr: Users should return to the advice provided by v2.14.0, and apply the go-cty convert functionality *after* setting defaults on a given `cty.Value`, rather than before.  ([#574](https://github.com/hashicorp/hcl/pull/574))
 
 ## v2.15.0 (November 10, 2022)