xdevplatform · mintlify · Jun 28, 2026 · Jun 28, 2026
diff --git a/changelog.mdx b/changelog.mdx
@@ -7,6 +7,15 @@ keywords: ["changelog", "API updates", "release notes", "what's new", "API chang
 
 To subscribe to updates, please [**“Turn on notifications”**](https://help.x.com/en/managing-your-account/notifications-on-mobile-devices#:~:text=In%20the%20top%20menu,%20you,you%20would%20like%20to%20receive) for [**@API**](https://x.com/api).
 
+<Update label="Jun 28, 2026" description="X Ads API">
+  ### Campaign budget optimization simplified to `LINE_ITEM`
+
+  Campaigns in the [Campaign Management API](/x-ads-api/campaign-management/reference) now support only `LINE_ITEM` budget optimization, matching the behavior of X Ads Manager.
+
+  - `budget_optimization` accepts only `LINE_ITEM` on `POST` and `PUT` campaign requests, and defaults to `LINE_ITEM` (previously `CAMPAIGN`).
+  - `standard_delivery` is deprecated at the campaign level. Configure standard versus accelerated delivery on the line item via its [`standard_delivery`](/x-ads-api/campaign-management/reference) parameter instead.
+</Update>
+
 <Update label="Jun 11, 2026" description="X API v2">
   ### Articles draft and publish endpoints
 

diff --git a/es/changelog.mdx b/es/changelog.mdx
@@ -7,6 +7,15 @@ keywords: ["registro de cambios", "actualizaciones de la API", "notas de la vers
 
 Para suscribirte a las actualizaciones, [**"Activa las notificaciones"**](https://help.x.com/en/managing-your-account/notifications-on-mobile-devices#:~:text=In%20the%20top%20menu,%20you,you%20would%20like%20to%20receive) para [**@API**](https://x.com/api).
 
+<Update label="28 de junio de 2026" description="X Ads API">
+  ### Optimización de presupuesto de campañas simplificada a `LINE_ITEM`
+
+  Las campañas de la [Campaign Management API](/x-ads-api/campaign-management/reference) ahora solo admiten la optimización de presupuesto `LINE_ITEM`, alineándose con el comportamiento de X Ads Manager.
+
+  - `budget_optimization` solo acepta `LINE_ITEM` en las solicitudes `POST` y `PUT` de campañas, y su valor predeterminado es `LINE_ITEM` (antes `CAMPAIGN`).
+  - `standard_delivery` queda obsoleto a nivel de campaña. Configura la entrega estándar o acelerada en la línea de pedido mediante su parámetro [`standard_delivery`](/x-ads-api/campaign-management/reference).
+</Update>
+
 <Update label="11 de junio de 2026" description="X API v2">
   ### Endpoints de borrador y publicación de Articles
 

diff --git a/ja/changelog.mdx b/ja/changelog.mdx
@@ -7,6 +7,15 @@ keywords: ["変更履歴", "API 更新", "リリースノート", "新着情報"
 
 更新情報の通知を受け取るには、[**@API**](https://x.com/api) の [**「通知をオンにする」**](https://help.x.com/en/managing-your-account/notifications-on-mobile-devices#:~:text=In%20the%20top%20menu,%20you,you%20would%20like%20to%20receive) を有効にしてください。
 
+<Update label="2026 年 6 月 28 日" description="X Ads API">
+  ### キャンペーンの予算最適化を `LINE_ITEM` のみに簡素化
+
+  [Campaign Management API](/x-ads-api/campaign-management/reference) のキャンペーンは、X Ads Manager の動作に合わせて、予算最適化として `LINE_ITEM` のみをサポートするようになりました。
+
+  - キャンペーンの `POST` および `PUT` リクエストで、`budget_optimization` は `LINE_ITEM` のみを受け付け、デフォルト値は `LINE_ITEM` になりました（以前は `CAMPAIGN`）。
+  - `standard_delivery` はキャンペーンレベルでは非推奨になりました。標準配信と高速配信の切り替えは、ライン項目の [`standard_delivery`](/x-ads-api/campaign-management/reference) パラメーターで設定してください。
+</Update>
+
 <Update label="2026 年 6 月 11 日" description="X API v2">
   ### Articles のドラフトおよび公開エンドポイント
 

diff --git a/ko/changelog.mdx b/ko/changelog.mdx
@@ -7,6 +7,15 @@ keywords: ["변경 로그", "API 업데이트", "릴리스 노트", "새로운
 
 업데이트를 구독하려면 [**@API**](https://x.com/api)의 [**"알림 켜기"**](https://help.x.com/en/managing-your-account/notifications-on-mobile-devices#:~:text=In%20the%20top%20menu,%20you,you%20would%20like%20to%20receive)를 활성화하세요.
 
+<Update label="2026년 6월 28일" description="X Ads API">
+  ### 캠페인 예산 최적화가 `LINE_ITEM`으로 단순화됨
+
+  [Campaign Management API](/x-ads-api/campaign-management/reference)의 캠페인은 이제 X Ads Manager의 동작과 동일하게 `LINE_ITEM` 예산 최적화만 지원합니다.
+
+  - 캠페인 `POST` 및 `PUT` 요청에서 `budget_optimization`은 `LINE_ITEM`만 허용하며, 기본값이 `LINE_ITEM`으로 변경되었습니다(이전에는 `CAMPAIGN`).
+  - `standard_delivery`는 캠페인 레벨에서 더 이상 사용되지 않습니다. 표준 또는 가속 게재 설정은 라인 항목의 [`standard_delivery`](/x-ads-api/campaign-management/reference) 매개변수에서 구성하세요.
+</Update>
+
 <Update label="2026년 6월 11일" description="X API v2">
   ### Articles 초안 작성 및 게시 엔드포인트
 

diff --git a/pt/changelog.mdx b/pt/changelog.mdx
@@ -7,6 +7,15 @@ keywords: ["registro de alterações", "atualizações da API", "notas de versã
 
 Para se inscrever para receber atualizações, [**"Ative as notificações"**](https://help.x.com/en/managing-your-account/notifications-on-mobile-devices#:~:text=In%20the%20top%20menu,%20you,you%20would%20like%20to%20receive) para [**@API**](https://x.com/api).
 
+<Update label="28 de junho de 2026" description="X Ads API">
+  ### Otimização de orçamento de campanhas simplificada para `LINE_ITEM`
+
+  As campanhas da [Campaign Management API](/x-ads-api/campaign-management/reference) agora suportam apenas a otimização de orçamento `LINE_ITEM`, alinhando-se ao comportamento do X Ads Manager.
+
+  - `budget_optimization` aceita apenas `LINE_ITEM` em solicitações `POST` e `PUT` de campanhas, e seu valor padrão agora é `LINE_ITEM` (antes era `CAMPAIGN`).
+  - `standard_delivery` foi descontinuado no nível da campanha. Configure a entrega padrão ou acelerada no item de linha por meio do parâmetro [`standard_delivery`](/x-ads-api/campaign-management/reference).
+</Update>
+
 <Update label="11 de junho de 2026" description="X API v2">
   ### Endpoints de rascunho e publicação de Articles