OpenSearch Release Notes

Validated on 17 Sep 2025 • Last edited on 12 Aug 2025

September 2025

17 September

  • Storage autoscaling is now in general availability. Additionally, you can now reduce your cluster’s amount of additional storage, as long as the new storage size is greater than or equal to the latest backup’s size plus any data growth since then and a 25% buffer.

  • Now in public preview, you can now enable storage autoscaling on all Managed Database engines. To enable autoscaling, see our resizing guides for MySQL, PostgreSQL, MongoDB, OpenSearch, and Kafka.

February 2025

28 February

December 2024

20 December

October 2024

29 October

September 2024

12 September

1 September

June 2024

20 June

17 June

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