Elastic Stack version 8.15.4 has been released, addressing critical issues and providing improvements over previous versions, particularly 8.15.3. A significant fix in APM Server 8.15.4 resolves a problem that could halt data ingestion when upgrading from version 8.12.2 or lower due to a missing rollover of APM data streams, which previously led to data being discarded. Users are encouraged to upgrade to this latest version to benefit from these enhancements and to review the release notes for a comprehensive list of changes and fixes included.