Hi Sarah,
You may find this
post useful where it notes the work the AtoM maintainers have planned for future releases. Copying the bit that mentions Elasticsearch below
2.7.2 release: Spring 2023
Various bug fixes, support on Rocky Linux 8 (already supported on Ubuntu 20.04)
2.8 release: Fall 2023
Bug fixes and API additions; Bootstrap 2.x deprecated (not tested)
2.9 release: Winter 2024
Upgrade to php 8.1, Mysql 8.0, Elasticsearch upgrade or swap tbd, support for Ubuntu 22.04 and Rocky Linux 9.0, removal of Bootstrap 2.x code
Vicky
Digital Standards Manager
National Library of Wales