sarath Thanks for posting your question in Microsoft Q&A. Yes, you are correct that beta APIs are subject to change (including breaking changes) without notice. Hence, we don't recommend beta or preview versions in Production apps. However, when it comes to generally available in future, we will provide advance notice of any breaking changes to the API.
Based on an internal discussion with our product team, there are no breaking changes from private preview to public preview and ETA for the public preview is November (next month) subject to change on other factors. The features may change based on feedback from customers before GA.
For any deployment to production near-future, consider other options to receive change notifications. If you have any specific questions on the feature, please email at [ask-graph-and-grid@microsoft.com] and our product team will assist with that.
I hope this helps and let me know if I can help with any other questions.
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