diff --git a/idea/resources-descriptors/META-INF/plugin.xml b/idea/resources-descriptors/META-INF/plugin.xml
index e3b3135e36a..154b0c777c7 100644
--- a/idea/resources-descriptors/META-INF/plugin.xml
+++ b/idea/resources-descriptors/META-INF/plugin.xml
@@ -16,24 +16,29 @@ The Kotlin plugin provides language support in IntelliJ IDEA and Android Studio.
   <idea-version since-build="202.1" until-build="202.*"/>
 
   <change-notes><![CDATA[
-    <h3>1.5.0-M2</h3>
-    <ul>
-      <li><a href="https://kotlinlang.org/docs/fun-interfaces.html?utm_source=product&utm_medium=link">SAM adapters</a> use `invokedynamic` on the JVM by default.</li>
-      <li>Deprecation of `-Xjvm-default=enable` and `-Xjvm-default=compatibility` compiler modes and `@JvmDefault` annotation.</li>
-      <li>Standard library: math functions `floorDiv()` and `mod()`, collection function `firstNotNullOf()`, strict version of String.toBoolean().</li>
-    </ul>
-    Learn more about Kotlin 1.5.0-M2 in the <a href="https://github.com/JetBrains/kotlin/releases/tag/v1.5.0-M2/">changelog</a> and <a href="https://blog.jetbrains.com/kotlin/2021/03/kotlin-1-5-0-m2-released/?utm_source=product&utm_medium=link">this blog post</a>.
-    <br><br>
-    <h3>1.5.0-M1</h3>
-    Released: <b>March 3, 2021</b>
+    <h3>1.5.0</h3>
     <ul>
       <li><a href="https://kotlinlang.org/docs/whatsnew14.html?utm_source=product&utm_medium=link#new-jvm-ir-backend">JVM IR backend</a> by default.</li>
       <li>New language features by default: inline value classes, sealed interfaces, and JVM records support.</li>
-      <li>Kotlin/JVM: new default target: 1.8 (1.6 is deprecated), string concatenation uses `invokedynamic` by default.</li>
+      <li>New default JVM target: 1.8 (1.6 is deprecated)</li>
+      <li>String concatenation and <a href="https://kotlinlang.org/docs/fun-interfaces.html?utm_source=product&utm_medium=link">SAM adapters</a>, use invokedynamic on JVM by default. Lambdas can use invokedynamic with an opt-in via `-Xlambdas=indy`.</li>
+      <li>Deprecation of `-Xjvm-default=enable` and `-Xjvm-default=compatibility` compiler modes and `@JvmDefault` annotation.</li>
       <li>Kotlin/Native compilation time improvements.</li>
+      <li>Kotlin/JS uses webpack 5 by default.</li>
+      <li>New stdlib APIs: math functions `floorDiv()` and `mod()`, collection function `firstNotNullOf()`, strict version of `String.toBoolean()`.</li>
+      <li>Stabilization of experimental APIs: unsigned integers, extensions for Java NIO Path API, Char-to-int and Char-to-code conversions, locale-agnostic functions for upper-/lowercasing.</li>
+      <li>Changes in the experimental Duration API.</li>
+      <li>Simplified kotlin-test dependency usage.</li>
+      <li>New and updated assertion functions in kotlin-test.</li>
+      <li>New library versions: coroutines 1.5.0, serialization 1.2.0, dateTime 0.2.0</li>
       <li>Fixed compiler exceptions.</li>
     </ul>
-    Learn more about Kotlin 1.5.0-M1 in the <a href="https://github.com/JetBrains/kotlin/releases/tag/v1.5.0-M1/">changelog</a>.
+    Learn more in:
+    <ul>
+      <li><a href="https://kotlinlang.org/docs/whatsnew15.html?utm_source=product&utm_medium=link">What’s New in Kotlin 1.5.0</a>.</li>
+      <li><a href="https://blog.jetbrains.com/kotlin/2021/04/kotlin-1-5-0-released/?utm_source=product&utm_medium=link">the release blog post</a>.</li>
+      <li><a href="https://github.com/JetBrains/kotlin/releases/tag/v1.5.0/">the release changelog</a>.</li>
+    </ul>
     <br><br>
     <h3>1.4.30</h3>
     Released: <b>February 4, 2021</b>
diff --git a/idea/resources-descriptors/META-INF/plugin.xml.as42 b/idea/resources-descriptors/META-INF/plugin.xml.as42
index 416fd43b8fe..dfc65060628 100644
--- a/idea/resources-descriptors/META-INF/plugin.xml.as42
+++ b/idea/resources-descriptors/META-INF/plugin.xml.as42
@@ -16,24 +16,29 @@ The Kotlin plugin provides language support in IntelliJ IDEA and Android Studio.
   <idea-version since-build="202.6397.94" until-build="202.*"/>
 
   <change-notes><![CDATA[
-    <h3>1.5.0-M2</h3>
-    <ul>
-      <li><a href="https://kotlinlang.org/docs/fun-interfaces.html?utm_source=product&utm_medium=link">SAM adapters</a> use `invokedynamic` on the JVM by default.</li>
-      <li>Deprecation of `-Xjvm-default=enable` and `-Xjvm-default=compatibility` compiler modes and `@JvmDefault` annotation.</li>
-      <li>Standard library: math functions `floorDiv()` and `mod()`, collection function `firstNotNullOf()`, strict version of String.toBoolean().</li>
-    </ul>
-    Learn more about Kotlin 1.5.0-M2 in the <a href="https://github.com/JetBrains/kotlin/releases/tag/v1.5.0-M2/">changelog</a> and <a href="https://blog.jetbrains.com/kotlin/2021/03/kotlin-1-5-0-m2-released/?utm_source=product&utm_medium=link">this blog post</a>.
-    <br><br>
-    <h3>1.5.0-M1</h3>
-    Released: <b>March 3, 2021</b>
+    <h3>1.5.0</h3>
     <ul>
       <li><a href="https://kotlinlang.org/docs/whatsnew14.html?utm_source=product&utm_medium=link#new-jvm-ir-backend">JVM IR backend</a> by default.</li>
       <li>New language features by default: inline value classes, sealed interfaces, and JVM records support.</li>
-      <li>Kotlin/JVM: new default target: 1.8 (1.6 is deprecated), string concatenation uses `invokedynamic` by default.</li>
+      <li>New default JVM target: 1.8 (1.6 is deprecated)</li>
+      <li>String concatenation and <a href="https://kotlinlang.org/docs/fun-interfaces.html?utm_source=product&utm_medium=link">SAM adapters</a>, use invokedynamic on JVM by default. Lambdas can use invokedynamic with an opt-in via `-Xlambdas=indy`.</li>
+      <li>Deprecation of `-Xjvm-default=enable` and `-Xjvm-default=compatibility` compiler modes and `@JvmDefault` annotation.</li>
       <li>Kotlin/Native compilation time improvements.</li>
+      <li>Kotlin/JS uses webpack 5 by default.</li>
+      <li>New stdlib APIs: math functions `floorDiv()` and `mod()`, collection function `firstNotNullOf()`, strict version of `String.toBoolean()`.</li>
+      <li>Stabilization of experimental APIs: unsigned integers, extensions for Java NIO Path API, Char-to-int and Char-to-code conversions, locale-agnostic functions for upper-/lowercasing.</li>
+      <li>Changes in the experimental Duration API.</li>
+      <li>Simplified kotlin-test dependency usage.</li>
+      <li>New and updated assertion functions in kotlin-test.</li>
+      <li>New library versions: coroutines 1.5.0, serialization 1.2.0, dateTime 0.2.0</li>
       <li>Fixed compiler exceptions.</li>
     </ul>
-    Learn more about Kotlin 1.5.0-M1 in the <a href="https://github.com/JetBrains/kotlin/releases/tag/v1.5.0-M1/">changelog</a>.
+    Learn more in:
+    <ul>
+      <li><a href="https://kotlinlang.org/docs/whatsnew15.html?utm_source=product&utm_medium=link">What’s New in Kotlin 1.5.0</a>.</li>
+      <li><a href="https://blog.jetbrains.com/kotlin/2021/04/kotlin-1-5-0-released/?utm_source=product&utm_medium=link">the release blog post</a>.</li>
+      <li><a href="https://github.com/JetBrains/kotlin/releases/tag/v1.5.0/">the release changelog</a>.</li>
+    </ul>
     <br><br>
     <h3>1.4.30</h3>
     Released: <b>February 4, 2021</b>