Hello Ambika Golla Thimmaiah,
Thank you for reaching out to Microsoft Support!
There is no set date for features to move from beta to v1.0, it can take days, it can take months. Your best bet is to keep an eye on the Graph API changelog and the relevant MS blogs for announcements. If the feature has been previously publicly announced, chances are another post will follow up when it reaches v1.0, and you can always probe the post author for updates. Not all features are released in such way unfortunately.
Hope this helps.
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