docs: style rules, TM, and currency conversion for 25 new languages

api-reference/languages/v3-languages-changelog.mdx

@@ -8,6 +8,14 @@ description: 'Changes to the v3/languages endpoints, including the GA release an
 
 This section lists dated changes to the API.
 
+### 30 June 2026
+
+**Expanded: `style_rules` feature on `translate_text` and `translate_document` resources** — the `style_rules`
+feature is now reported on 25 additional target languages: `ar`, `bg`, `cs`, `da`, `el`, `et`, `fi`, `he`,
+`hu`, `id`, `lt`, `lv`, `nb`, `nl`, `pl`, `pt`, `ro`, `ru`, `sk`, `sl`, `sv`, `tr`, `uk`, `vi`, and `zh`.
+These join the 8 previously supported languages (`de`, `en`, `es`, `fr`, `it`, `ja`, `ko`, `zh`). Translation
+memories are also now supported for these languages.
+
 ### 5 June 2026
 
 **New: `spoken_terms` feature on `voice` resource** — the `spoken_terms` feature is now reported on

api-reference/openapi.json

@@ -7329,13 +7329,37 @@
         "description": "The language that the style rule list is applied to.",
         "type": "string",
         "enum": [
+          "ar",
+          "bg",
+          "cs",
+          "da",
           "de",
+          "el",
           "en",
           "es",
+          "et",
+          "fi",
           "fr",
+          "he",
+          "hu",
+          "id",
           "it",
           "ja",
           "ko",
+          "lt",
+          "lv",
+          "nb",
+          "nl",
+          "pl",
+          "pt",
+          "ro",
+          "ru",
+          "sk",
+          "sl",
+          "sv",
+          "tr",
+          "uk",
+          "vi",
           "zh"
         ]
       },

api-reference/openapi.yaml

@@ -5218,13 +5218,37 @@ components:
       description: The language that the style rule list is applied to.
       type: string
       enum:
+      - ar
+      - bg
+      - cs
+      - da
       - de
+      - el
       - en
       - es
+      - et
+      - fi
       - fr
+      - he
+      - hu
+      - id
       - it
       - ja
       - ko
+      - lt
+      - lv
+      - nb
+      - nl
+      - pl
+      - pt
+      - ro
+      - ru
+      - sk
+      - sl
+      - sv
+      - tr
+      - uk
+      - vi
       - zh
     StyleRuleName:
       description: Name associated with the style rule list.

api-reference/style-rules.mdx

@@ -161,7 +161,7 @@ Create a new style rule list with configured rules and optional custom instructi
   The name of the style rule list. Maximum length: 1024 characters.
 </ParamField>
 <ParamField body="language" type="string" required>
-  The target language for the style rules. Supported values: `de`, `en`, `es`, `fr`, `it`, `ja`, `ko`, `zh`.
+  The target language for the style rules. Supported values: `ar`, `bg`, `cs`, `da`, `de`, `el`, `en`, `es`, `et`, `fi`, `fr`, `he`, `hu`, `id`, `it`, `ja`, `ko`, `lt`, `lv`, `nb`, `nl`, `pl`, `pt`, `ro`, `ru`, `sk`, `sl`, `sv`, `tr`, `uk`, `vi`, `zh`.
 </ParamField>
 <ParamField body="configured_rules" type="object">
   An object containing predefined rules to enable for the style rule list. Rules are organized by category (e.g., `dates_and_times`, `punctuation`). Each category can contain multiple rule options.

api-reference/translate.mdx

@@ -300,7 +300,7 @@ Note that we do not include examples for our client libraries in every single se
   Specify a list of instructions to customize the translation behavior. Up to 10 custom instructions can be specified, each with a maximum of 300 characters.
 
   <Info>
-    The target language must be `de`, `en`, `es`, `fr`, `it`, `ja`, `ko`, `zh` or any variants of these languages.
+    The target language must be `ar`, `bg`, `cs`, `da`, `de`, `el`, `en`, `es`, `et`, `fi`, `fr`, `he`, `hu`, `id`, `it`, `ja`, `ko`, `lt`, `lv`, `nb`, `nl`, `pl`, `pt`, `ro`, `ru`, `sk`, `sl`, `sv`, `tr`, `uk`, `vi`, `zh`, or any variants of these languages.
 
     You can find best practices on how to write custom instructions [here](/docs/best-practices/custom-instructions).
   </Info>

docs/best-practices/custom-instructions.mdx

@@ -84,7 +84,7 @@ When using custom instructions, keep these constraints in mind:
 
 - **Maximum instructions**: Up to 10 custom instructions per request
 - **Character limit**: Each instruction can contain a maximum of 300 characters
-- **Supported target languages**: `de`, `en`, `es`, `fr`, `it`, `ja`, `ko`, `zh`, or any variants of these languages
+- **Supported target languages**: `ar`, `bg`, `cs`, `da`, `de`, `el`, `en`, `es`, `et`, `fi`, `fr`, `he`, `hu`, `id`, `it`, `ja`, `ko`, `lt`, `lv`, `nb`, `nl`, `pl`, `pt`, `ro`, `ru`, `sk`, `sl`, `sv`, `tr`, `uk`, `vi`, `zh`, or any variants of these languages
 - **Model compatibility**: Custom instructions are compatible with all `model_type` values.
 
 ## Related documentation

docs/getting-started/supported-languages.mdx

@@ -19,5 +19,5 @@ import { LanguageTable } from "/snippets/language-table.jsx"
 </Info>
 
 <Info>
-  Style rules are supported for the following target languages: `de`, `en`, `es`, `fr`, `it`, `ja`, `ko`, and `zh`. For more details, see the [Style Rules API documentation](/api-reference/style-rules). Writing style and tone availability for `/write/rephrase` can also be retrieved via [`GET /v3/languages?resource=write`](/api-reference/languages/retrieve-supported-languages-by-resource).
+  Style rules, custom instructions, and translation memories are supported for the following target languages: `ar`, `bg`, `cs`, `da`, `de`, `el`, `en`, `es`, `et`, `fi`, `fr`, `he`, `hu`, `id`, `it`, `ja`, `ko`, `lt`, `lv`, `nb`, `nl`, `pl`, `pt`, `ro`, `ru`, `sk`, `sl`, `sv`, `tr`, `uk`, `vi`, and `zh`. For more details, see the [Style Rules API documentation](/api-reference/style-rules). You can also retrieve supported languages programmatically via [`GET /v3/languages?resource=translate_text`](/api-reference/languages/retrieve-supported-languages-by-resource) and check for the `style_rules` feature key. Writing style and tone availability for `/write/rephrase` can also be retrieved via [`GET /v3/languages?resource=write`](/api-reference/languages/retrieve-supported-languages-by-resource).
 </Info>

docs/resources/roadmap-and-release-notes.mdx

@@ -10,6 +10,12 @@ rss: true
 </Update>
 
 <Update label="June 2026">
+## June 30 - Style Rules, Translation Memories, and Currency Conversion for 25 Additional Languages
+- [Style rules](/api-reference/style-rules), [custom instructions](/docs/best-practices/custom-instructions), and [translation memories](/docs/learning-how-tos/examples-and-guides/how-to-use-translation-memories) are now supported for 25 additional target languages: Arabic (`ar`), Bulgarian (`bg`), Chinese (`zh`), Czech (`cs`), Danish (`da`), Dutch (`nl`), Estonian (`et`), Finnish (`fi`), Greek (`el`), Hebrew (`he`), Hungarian (`hu`), Indonesian (`id`), Latvian (`lv`), Lithuanian (`lt`), Norwegian (`nb`), Polish (`pl`), Portuguese (`pt`), Romanian (`ro`), Russian (`ru`), Slovak (`sk`), Slovenian (`sl`), Swedish (`sv`), Turkish (`tr`), Ukrainian (`uk`), and Vietnamese (`vi`).
+- These join the 8 previously supported languages (`de`, `en`, `es`, `fr`, `it`, `ja`, `ko`, `zh`), bringing the total to 33 target languages.
+- Currency conversion is also available as a configured style rule for these languages, enabling automatic conversion of currencies using daily exchange rates.
+- Available on both the frontend and the API for all customers.
+
 ## June 24 - API Key Permissions General Availability
 - [API key permissions](/docs/getting-started/managing-api-keys#api-key-permissions) are now generally available. Scope a developer API key to specific endpoints so it can perform only the operations you allow.
 - Available on the API Pro, API Developer, API Growth, and API Enterprise plans.