Hi @david2, thanks for your patience with the wider deprecation announcement!
We’ve just published it: Deprecation of the Epic Link, Parent Link and other related fields in REST APIs and webhooks. It has all the details and provides a new 6-months deprecation period. Feel free to ask any questions in the new announcement.
To avoid confusion, the old one https://developer.atlassian.com/cloud/jira/platform/deprecation-notice-hierarchy-levels/ has been canceled and can be safely ignored.
The other two related announcements are still relevant:
Thanks,
Konstantin