You can access Apache Solr 9.1 through the following official channels: Solr News - Apache Solr
Apache Solr 9.1, released in November 2022, continues to be a cornerstone for enterprise-grade search, offering significant improvements in scalability and user experience. While newer versions like 9.10.1 are now available, version 9.1 remains a stable choice for many production environments. apache solr 9.1 download