---
title: 0.66.0
---

import { LinkCard } from "@astrojs/starlight/components";

<LinkCard
  title="TypeSpec Core 1.10"
  description="See changes to the TypeSpec language and core libraries"
  href="https://typespec.io/docs/release-notes/release-2026-03-10"
/>

# 0.66.0

## Features

### @azure-tools/typespec-client-generator-core

- [#3867](https://github.com/Azure/typespec-azure/pull/3867) Add `.streamMetadata` for sse events streamed in or out

## Bug Fixes

### @azure-tools/typespec-client-generator-core

- [#3953](https://github.com/Azure/typespec-azure/pull/3953) Fix namespace duplication when `@clientNamespace` extends the namespace flag (e.g. `@clientNamespace("Azure.Search.Documents.Indexes")` with namespace flag `Azure.Search.Documents`)
