SOLR-17254 - Major Changes in 9.6 (apache#2425)

solr/solr-ref-guide/modules/upgrade-notes/pages/major-changes-in-solr-9.adoc

@@ -68,8 +68,20 @@ In Solr 8, it was possible to add docValues to a schema without re-indexing via
 Due to changes in Lucene 9, that isn't possible any more.
 
 == Solr 9.6
+=== Dependency upgrades
+Lucene is upgraded to 9.10.0 and a variety of library dependencies have been upgraded. See https://solr.apache.org/docs/9_6_0/changes/Changes.html for specific upgraded libraries.
+
 === SolrJ
-* The suite of `Http2SolrClient`s, powered by the Jetty Http library are no longer marked as experimental.
+* The `Http2SolrClient` classes powered by the Jetty Http library are no longer marked as experimental.
+* Solrj now offers a lightweight client based on java.net.http.HttpClient: `HttpJdkSolrClient`
+* SolrJ now offers an improved async request API
+
+=== Queries
+* Distributed stats can be disabled via request parameter
+* Query timeouts (limits) may now be based on either CPU time as well as wall clock
+
+=== Other
+* Inactive shards will now be cleaned up periodically
 
 == Solr 9.5
 === Dependency Upgrades