Merge pull request #3989 from mrbullwinkle/mrb_04_08_2025_updates_retirement

[Azure Open] PM update request -model upgrades model version not yet available in region.

Author: prmerger-automator[bot]

articles/ai-services/openai/concepts/model-retirements.md

@@ -118,6 +118,11 @@ These models are currently available for use in Azure OpenAI Service.
 
  **<sup>1</sup>** We'll notify all customers with these preview deployments at least 30 days before the start of the upgrades. We'll publish an upgrade schedule detailing the order of regions and model versions that we'll follow during the upgrades, and link to that schedule from here.
 
+> [!TIP]
+> **Will a model upgrade happen if the new model version is not yet available in that region?**
+>
+> Yes, even in cases where the latest model version is not yet available in a region, we will automatically upgrade deployments during the scheduled upgrade window. For more information, see [Azure OpenAI model versions](/azure/ai-services/openai/concepts/model-versions#will-a-model-upgrade-happen-if-the-new-model-version-is-not-yet-available-in-that-region).
+
 > [!IMPORTANT]
 > Vision enhancements preview features including Optical Character Recognition (OCR), object grounding, video prompts will be retired and no longer available once `gpt-4` Version: `vision-preview` is upgraded to `turbo-2024-04-09`. If you're currently relying on any of these preview features, this automatic model upgrade will be a breaking change.