Add release notes for february 2026 release (#9668)

Author: timotheeguerin

.chronus/changes/fionabronwen-type-utils-2026-0-12-16-12-5.md

@@ -2,11 +2,6 @@
 changeKind: deprecation
 packages:
   - "@typespec/compiler"
-  - "@typespec/http"
-  - "@typespec/openapi3"
-  - "@typespec/tspd"
-  - "@typespec/http-server-js"
-  - "@typespec/http-server-csharp"
 ---
 
 Deprecate `program` parameter in `isArrayModelType` and `isRecordModelType` functions. Use the new single-argument overload instead: `isArrayModelType(type)` and `isRecordModelType(type)`.

website/src/content/docs/docs/release-notes/release-2026-02-10.md

@@ -0,0 +1,62 @@
+---
+title: "1.9.0"
+releaseDate: 2026-02-10
+version: "1.9.0"
+---
+
+# 1.9.0
+
+## Deprecations
+
+### @typespec/compiler
+
+- [#9336](https://github.com/microsoft/typespec/pull/9336) Deprecate `program` parameter in `isArrayModelType` and `isRecordModelType` functions. Use the new single-argument overload instead: `isArrayModelType(type)` and `isRecordModelType(type)`.
+
+## Features
+
+### @typespec/compiler
+
+- [#9078](https://github.com/microsoft/typespec/pull/9078) Remove type constraints from `@continuationToken` decorator
+- [#9512](https://github.com/microsoft/typespec/pull/9512) [API] Add performance reporting utilities for emitters [See docs for more info](https://typespec.io/docs/extending-typespec/performance-reporting/)
+- [#9475](https://github.com/microsoft/typespec/pull/9475) [API] `serializeValueAsJson` throws a `UnsupportedScalarConstructorError` for unsupported scalar constructor instead of crashing
+
+### @typespec/openapi3
+
+- [#9629](https://github.com/microsoft/typespec/pull/9629) importer - Add support for importing the `@continuationToken` decorator based on x-ms-list-continuation-token extension
+- [#9627](https://github.com/microsoft/typespec/pull/9627) importer - Add support for importing paging link decorators (`@prevLink`, `@nextLink`, `@firstLink`, `@lastLink`) based on x-ms-list-\*-link OpenAPI extensions
+- [#9609](https://github.com/microsoft/typespec/pull/9609) importer - Add support for x-ms-list extension to add `@list` decorator to operations
+- [#9613](https://github.com/microsoft/typespec/pull/9613) importer - Add support for `@offset` decorator when x-ms-list-offset extension is present
+- [#9618](https://github.com/microsoft/typespec/pull/9618) importer - Add support for `@pageSize` decorator based on x-ms-list-page-size extension
+- [#9615](https://github.com/microsoft/typespec/pull/9615) importer - Add support for x-ms-list-page-items extension to `@pageItems` decorator
+- [#9611](https://github.com/microsoft/typespec/pull/9611) importer - Add support for x-ms-list-page-index extension to add `@pageIndex` decorator
+- [#9512](https://github.com/microsoft/typespec/pull/9512) Expose performance information when running with `--stats`
+- [#9412](https://github.com/microsoft/typespec/pull/9412) importer - OpenAPI number type with duration format now converts to TypeSpec duration type with @encode("seconds", float32) decorator
+- [#9584](https://github.com/microsoft/typespec/pull/9584) Expose `openapi-versions` emitter option now that both 3.1.0 and 3.2.0 are implemented.
+
+## Bug Fixes
+
+### @typespec/compiler
+
+- [#9320](https://github.com/microsoft/typespec/pull/9320) Fix `--list-files` not working when multiple instance of compiler are loaded
+- [#9607](https://github.com/microsoft/typespec/pull/9607) Fix stack overflow for specs with large number of circular references
+- [#9342](https://github.com/microsoft/typespec/pull/9342) Ensuring ignore-deprecated gets resolved.
+- [#9588](https://github.com/microsoft/typespec/pull/9588) Fixed several checking errors around template instantiations that could cause TemplateParameter instances to leak into decorator calls.
+
+### @typespec/openapi3
+
+- [#9410](https://github.com/microsoft/typespec/pull/9410) importer - null reference exception if member schema cannot be resolved
+- [#9533](https://github.com/microsoft/typespec/pull/9533) Fix parameters with default value resulting in `$ref` with `default` as sibling for OpenAPI 3.0
+- [#9583](https://github.com/microsoft/typespec/pull/9583) Fix: tag metadata not scopped to the service it was defined on
+- [#9475](https://github.com/microsoft/typespec/pull/9475) Handle use of `.now()` constructor on date time types in examples and default.
+
+### @typespec/json-schema
+
+- [#9580](https://github.com/microsoft/typespec/pull/9580) Fix crash on usage of templates that cannot be named
+
+### @typespec/versioning
+
+- [#9444](https://github.com/microsoft/typespec/pull/9444) Fix incorrect incompatible versioning error in model expressions
+
+### @typespec/rest
+
+- [#8609](https://github.com/microsoft/typespec/pull/8609) Fix `@actionSeparator` decorator to only accept Operation, Interface, and Namespace targets