[CALCITE-7037] Announce 1.40.0 release and update release notes

Author: asolimando

site/_docs/history.md

@@ -100,7 +100,7 @@ Wei Zhou,
 Xiong Duan,
 Yu Xu,
 Zhen Chen,
-zhuyufeng,
+zhuyufeng
 
 Compatibility: This release is tested on Linux, macOS, Microsoft Windows;
 using JDK/OpenJDK versions 8 to 23;
@@ -132,6 +132,10 @@ Taking `RexBuilder#makeIn($0, ARRAY [100, 200], ARRAY [300, 400])` as an example
 Before: `OR(=($0, ARRAY(100, 200)), =($0, ARRAY(300, 400)))`
 After: `SEARCH($0, Sarg[[100:INTEGER, 200:INTEGER]:INTEGER NOT NULL ARRAY, [300:INTEGER, 400:INTEGER]:INTEGER NOT NULL ARRAY]:INTEGER NOT NULL ARRAY)`
 
+* [<a href="https://issues.apache.org/jira/browse/CALCITE-6959">CALCITE-6959</a>]
+* [<a href="https://issues.apache.org/jira/browse/CALCITE-6961">CALCITE-6961</a>]
+Addition of non-default methods for `LogicalAsofJoin` and `LogicalRepeatUnion`, respectively, to `RelShuttle`.
+
 #### New features
 {: #new-features-1-40-0}
 

site/_posts/2025-05-28-release-1.40.0.md

@@ -0,0 +1,41 @@
+---
+layout: news_item
+date: "2025-05-28 08:00:00 +0000"
+author: asolimando
+version: 1.40.0
+categories: [release]
+tag: v1-40-0
+sha: e2e77aaf172ce997b92a9e574b5fcf77a6dc297a
+---
+<!--
+{% comment %}
+Licensed to the Apache Software Foundation (ASF) under one or more
+contributor license agreements.  See the NOTICE file distributed with
+this work for additional information regarding copyright ownership.
+The ASF licenses this file to you under the Apache License, Version 2.0
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+http://www.apache.org/licenses/LICENSE-2.0
+
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+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
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+{% endcomment %}
+-->
+
+The [Apache Calcite PMC]({{ site.baseurl }}) is pleased to announce
+[Apache Calcite release 1.40.0]({{ site.baseurl }}/docs/history.html#v1-40-0).
+
+This release comes 2 months after [1.39.0](#v1-39-0),
+contains contributions from 20 contributors, and resolves 102 issues.
+
+Highlights include
+the addition of several improvements and additional optimization rules, notably advanced set operation handling with new rules for converting `INTERSECT` to semi-joins and `EXISTS` subqueries, `MINUS` to anti-joins and filters, and optimizing `UNION`s with common sources,
+join optimization is improved through predicate expansion from disjunctions and specialized handling of complex join conditions,
+additional optimizations include new rules for `MIN`/`MAX` aggregates and smarter filter-sort interactions,
+addition of Doris, DuckDB, SQLite, and Trino dialects, as well as improved support for ClickHouse,
+support for aliases referencing lateral columns,
+support for defining which rule sets to apply for individual Quidem tests.