Thanks for posting here in the Google Nest Community.
Good question, let me help you. When accepted into the Public Preview program, users get a notification the next time they open Google Home app. There will also be a card in the app feed mentioning the same, which invites users to acknowledge the approval. There are no eligibility requirements to be part of Public Preview. If you haven’t been invited into the program, this just means we’re at capacity right now. We hope to expand the program slowly over time, and we appreciate your patience!
You can check this link for more information.
Hope this helps.
We understand. Google reviews the requests periodically for approval and we don't have a specific time when it will happen. We’re always trying to improve our user’s experience, we appreciate your feedback.
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