Query Plans in Performance Insights

Query Plans in Performance Insights was announced on July 2, 2020, at https://aws.amazon.com/about-aws/whats-new/2020/07/amazon-rds-performance-insights-supports-query-plan-capture/.

It said: "RDS Performance Insights allows all database users to identify the most resource intensive SQL queries and from where they originated on a visual dashboard in seconds. Now, RDS Performance Insights also collects query plans of resource intensive SQL queries and stores them over time. You can determine if the changed performance of a SQL query is due to a different query plan, compare the old and new query plans, and then make improvements to your application such as optimizing a slow SQL query, adding an index to your database, and scaling your database."

Now that announcement has been removed and there is no mention of this feature in the RDS docs or in the Performance Insights section of the RDS console. What is happening with this feature?