added to what's new

Author: ChrisHMSFT

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

@@ -19,6 +19,7 @@ keywords:
 
 - **ChatGPT (gpt-35-turbo) public preview**. To learn more checkout the new [quickstart](./quickstart.md), and [how-to articles](./how-to/chatgpt.md).
 
+- Increased training limits for fine-tuning: The max training job size (tokens in training file) x (# of epochs) is 2 Billion tokens for all models. We have also increased the max training job from 120 to 720 hours. 
 - Adding additional use cases to your existing access.  Previously, the process for adding new use cases required customers to reapply to the service. Now, we're releasing a new process that allows you to quickly add new use cases to your use of the service. This process follows the established Limited Access process within Azure Cognitive Services. [Existing customers can attest to any and all new use cases here](https://customervoice.microsoft.com/Pages/ResponsePage.aspx?id=v4j5cvGGr0GRqy180BHbR7en2Ais5pxKtso_Pz4b1_xUM003VEJPRjRSOTZBRVZBV1E5N1lWMk1XUyQlQCN0PWcu). Please note that this is required anytime you would like to use the service for a new use case you did not originally apply for.
 
 ## February 2023