Merge pull request #270926 from mrbullwinkle/mrb_04_02_2024_fine_tuning

[Azure OpenAI] Update what's new fine-tuning support

Author: prmerger-automator[bot]

articles/ai-services/openai/whats-new.md

@@ -10,12 +10,24 @@ ms.custom:
   - ignite-2023
   - references_regions
 ms.topic: whats-new
-ms.date: 03/12/2024
+ms.date: 04/02/2024
 recommendations: false
 ---
 
 # What's new in Azure OpenAI Service
 
+## April 2024
+
+### Fine-tuning is now supported in East US 2
+
+Fine-tuning is now available in East US 2 with support for:
+
+- `gpt-35-turbo` (0613)
+- `gpt-35-turbo` (1106)
+- `gpt-35-turbo` (0125)
+
+Check the [models page](concepts/models.md#fine-tuning-models), for the latest information on model availability and fine-tuning support in each region.  
+
 ## March 2024
 
 ### Risks & Safety monitoring in Azure OpenAI Studio