Update deprecation-notice.md

Author: peytonfraser

articles/ai-services/luis/includes/deprecation-notice.md

@@ -9,4 +9,4 @@ ms.date: 06/12/2025
 ---
 
 > [!IMPORTANT]
-> LUIS will be retired on October 1st 2025 and starting April 1st 2023 you will not be able to create new LUIS resources. We recommend [migrating your LUIS applications](../../language-service/conversational-language-understanding/how-to/migrate-from-luis.md) to [conversational language understanding](../../language-service/conversational-language-understanding/overview.md) to benefit from continued product support and multilingual capabilities.
+> LUIS will be fully retired on March 31, 2026. LUIS resource creation is not available. Starting October 31, 2025, the LUIS portal will no longer be available. We recommend [migrating your LUIS applications](../../language-service/conversational-language-understanding/how-to/migrate-from-luis.md) to [conversational language understanding](../../language-service/conversational-language-understanding/overview.md) to benefit from continued product support and multilingual capabilities.