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+---
+title: "1.8.0"
+releaseDate: 2026-01-13
+version: "1.8.0"
+---
+
+# 1.8.0
+
+## Features
+
+### @typespec/compiler
+
+- [#9295](https://github.com/microsoft/typespec/pull/9295) Add `now()` initializer to date/time scalars (`plainDate`, `plainTime`, `utcDateTime`, `offsetDateTime`) for indicating current date/time at runtime. Emitters should interpret this as the appropriate runtime value (e.g., database `CURRENT_TIMESTAMP`, JavaScript `Date.now()`, etc.).
+- [#9104](https://github.com/microsoft/typespec/pull/9104) [API] Introduction of decorator validator callbacks. A decorator can define some callbacks to achieve some deferred validation (After the type is finished or the whole graph is)
+- [#9288](https://github.com/microsoft/typespec/pull/9288) [api] Expose `createSuppressCodeFixes` method to generate multiple code fixes from diagnostics
+- [#9262](https://github.com/microsoft/typespec/pull/9262) Add support for OpenAPI 3.2.0 `defaultMapping` in discriminated unions. When a discriminated union has a default variant (unnamed variant), it is now properly emitted:
+  - For OpenAPI 3.2.0: The default variant is included in `oneOf` array and referenced via `discriminator.defaultMapping` property
+  - For OpenAPI 3.0 and 3.1: The default variant is included in `oneOf` array and its discriminator value is added to the `discriminator.mapping` object
+- [#9300](https://github.com/microsoft/typespec/pull/9300) Add typekit to tester instances and test compile result"
+
+### @typespec/openapi3
+
+- [#9289](https://github.com/microsoft/typespec/pull/9289) Add support for importing deprecated properties and types from OpenAPI
+- [#9262](https://github.com/microsoft/typespec/pull/9262) Add support for OpenAPI 3.2.0 `defaultMapping` in discriminated unions. When a discriminated union has a default variant (unnamed variant), it is now properly emitted:
+  - For OpenAPI 3.2.0: The default variant is included in `oneOf` array and referenced via `discriminator.defaultMapping` property
+  - For OpenAPI 3.0 and 3.1: The default variant is included in `oneOf` array and its discriminator value is added to the `discriminator.mapping` object
+
+## Bug Fixes
+
+### @typespec/compiler
+
+- [#9280](https://github.com/microsoft/typespec/pull/9280) suppress - a extends/is inner statement suppress should be generated on the parent model node
+- [#9293](https://github.com/microsoft/typespec/pull/9293) compiler - suppression node selection for operation response bodies
+- [#9308](https://github.com/microsoft/typespec/pull/9308) Fixed mutation of decorator's argument values
+
+### @typespec/http
+
+- [#9311](https://github.com/microsoft/typespec/pull/9311) Fix empty response models with `statusCode` defined in a base model
+
+### @typespec/openapi3
+
+- [#9228](https://github.com/microsoft/typespec/pull/9228) Importer: Escape ${...} patterns in extension string property values to prevent interpolation
+- [#9236](https://github.com/microsoft/typespec/pull/9236) Fix extension properties with JSON-like strings using escaped string literals to prevent triple-quote syntax issues
+- [#9275](https://github.com/microsoft/typespec/pull/9275) import tool - avoid double escaping backslashes
+- [#9265](https://github.com/microsoft/typespec/pull/9265) import tool - missing imports for SSE events
+- [#9265](https://github.com/microsoft/typespec/pull/9265) import tool - escape SSE event union identifiers when required