Update overview.md

Author: eric-urban

articles/ai-services/speech-service/overview.md

@@ -6,7 +6,7 @@ author: eric-urban
 manager: nitinme
 ms.service: azure-ai-speech
 ms.topic: overview
-ms.date: 1/21/2024
+ms.date: 7/18/2024
 ms.author: eur
 ---
 
@@ -66,7 +66,7 @@ Fast transcription API is used to transcribe audio files with returning results
 - Video translation 
 
 > [!NOTE]
-> Fast transcription API is only available via the speech to text REST API version 3.3. 
+> Fast transcription API is only available via the speech to text REST API version 2024-05-15-preview. 
 
 To get started with fast transcription, see [use the fast transcription API (preview)](fast-transcription-create.md).