[core] For string-valued properties, do coercion rather than assertion

1 files changed, 3 insertions, 0 deletions

diff --git a/scripts/changelog_staging/expression-string-coercion.json b/scripts/changelog_staging/expression-string-coercion.json
new file mode 100644
index 0000000000..118c89a51c
--- /dev/null
+++ b/scripts/changelog_staging/expression-string-coercion.json
@@ -0,0 +1,3 @@
+{
+  "core": "Arguments to the `concat` expression operator are now automatically converted to string values as if via `to-string`, as are values for the `text-field`, `icon-image`, and `*-pattern` properties. Previously, such values were required to be strings, and if they were not, an error occurred."
+}