Elasticsearch announced the release of version 5.1.2, the latest stable update, and version 2.4.4, the newest release in the legacy 2.x series, both available on Elastic Cloud. The update addresses several key issues, including a security vulnerability in X-Pack 5.1.1, where document- and field-level security was improperly applied to certain requests. This release also includes performance improvements for mapping updates, ensuring only changed types are reprocessed, and resolves issues with master nodes leaving clusters under heavy indexing load by utilizing consistent IndexReader statistics. Additionally, the Netty recycler has been disabled to prevent heap exhaustion and out-of-memory errors, enhancing system stability under high throughput conditions. Users are encouraged to upgrade and provide feedback on their experience.