Elastic Stack version 8.3.1 was released on June 30, 2022, addressing several security vulnerabilities and providing crucial fixes, making it a recommended upgrade over previous 8.3.x versions. Notable improvements include resolving an Elasticsearch issue related to the incorrect sanitization of certain Azure SAS tokens by the SDK and a Kibana fix that prevents failures or duplication when importing or copying the same saved object multiple times with the "Check for existing objects" option. For a comprehensive list of changes and detailed issue resolutions across products like Elasticsearch, Kibana, Beats, Logstash, Elastic Enterprise Search, Elastic Observability, and Elastic Security Solution, users are encouraged to review the 8.3.1 release notes.