Merge pull request #265600 from gojira/keijik/models-02-07

Update 3.5T retirements dates; 4T whatsnew

Author: prmerger-automator[bot]

articles/ai-services/openai/concepts/models.md

@@ -144,7 +144,7 @@ GPT-3.5 Turbo version 0301 is the first version of the model released.  Version
 See [model versions](../concepts/model-versions.md) to learn about how Azure OpenAI Service handles model version upgrades, and [working with models](../how-to/working-with-models.md) to learn how to view and configure the model version settings of your GPT-3.5 Turbo deployments.
 
 > [!NOTE]
-> Version `0613` of `gpt-35-turbo` and `gpt-35-turbo-16k` will be retired on June 13, 2024. Version `0301` of `gpt-35-turbo` will be retired on July 5, 2024.  See [model updates](../how-to/working-with-models.md#model-updates) for model upgrade behavior.
+> Version `0613` of `gpt-35-turbo` and `gpt-35-turbo-16k` will be retired no earlier than June 13, 2024. Version `0301` of `gpt-35-turbo` will be retired no earlier than July 5, 2024.  See [model updates](../how-to/working-with-models.md#model-updates) for model upgrade behavior.
 
 ### GPT-3.5-Turbo model availability
 

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

@@ -18,6 +18,12 @@ recommendations: false
 
 ## February 2024
 
+### GPT-4-0125-preview model available
+
+The `gpt-4` model version `0125-preview` is now available on Azure OpenAI Service in the East US, North Central US, and South Central US regions.  Customers with deployments of `gpt-4` version `1106-preview` will be automatically upgraded to `0125-preview` in the coming weeks.  
+
+For information on model regional availability and upgrades refer to the [models page](./concepts/models.md).
+
 ### Assistants API public preview
 
 Azure OpenAI now supports the API that powers OpenAI's GPTs. Azure OpenAI Assistants (Preview) allows you to create AI assistants tailored to your needs through custom instructions and advanced tools like code interpreter, and custom functions. To learn more, see: