diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4e28a44b7..10590924a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,16 @@
 # CHANGELOG
 
+## 0.3.0
+
+#### Features
+
+- Added `iosSimulatorArm64`, `watchosSimulatorArm64`, `tvosSimulatorArm64`, `macosArm64` target support ([141](https://github.com/Kotlin/kotlinx-datetime/issues/141), [144](https://github.com/Kotlin/kotlinx-datetime/issues/144)).
+
+#### Changes
+
+- `ZoneOffset` was replaced by two other classes: `FixedOffsetDateTime`, which represents a time zone with a fixed offset, and `UtcOffset`, which represents just the UTC offset ([PR#125](https://github.com/Kotlin/kotlinx-datetime/pull/125)).
+- The `DayBased` and `MonthBased` subclasses of `DateTimeUnit.DateBased` are now accessed as `DateTimeUnit.DayBased` and `DateTimeUnit.MonthBased` as opposed to `DateTimeUnit.DateBased.DayBased` and `DateTimeUnit.DateBased.MonthBased` respectively ([PR#131](https://github.com/Kotlin/kotlinx-datetime/pull/131)).
+
 ## 0.2.1
 
 #### Fixes
diff --git a/README.md b/README.md
index e0edf69b0..4443fa53f 100644
--- a/README.md
+++ b/README.md
@@ -36,13 +36,14 @@ The library provides the basic set of types for working with date and time:
 - `Clock` to obtain the current instant;
 - `LocalDateTime` to represent date and time components without a reference to the particular time zone; 
 - `LocalDate` to represent the components of date only;
-- `TimeZone` and `ZoneOffset` provide time zone information to convert between `Instant` and `LocalDateTime`;
+- `TimeZone` and `FixedOffsetTimeZone` provide time zone information to convert between `Instant` and `LocalDateTime`;
 - `Month` and `DayOfWeek` enums;
 - `DateTimePeriod` to represent a difference between two instants decomposed into date and time units;
 - `DatePeriod` is a subclass of `DateTimePeriod` with zero time components,
 it represents a difference between two LocalDate values decomposed into date units.
 - `DateTimeUnit` provides a set of predefined date and time units to use in arithmetic operations on `Instant` and `LocalDate`. 
-  
+- `UtcOffset` represents the amount of time the local date/time at a particular time zone differs from the date/time at UTC.
+
 ### Type use-cases
 
 Here is some basic advice on how to choose which of the date-carrying types to use in what cases:
@@ -295,7 +296,7 @@ kotlin {
     sourceSets {
         commonMain {
              dependencies {
-                 implementation("org.jetbrains.kotlinx:kotlinx-datetime:0.2.1")
+                 implementation("org.jetbrains.kotlinx:kotlinx-datetime:0.3.0")
              }
         }
     }
@@ -306,7 +307,7 @@ kotlin {
 
 ```groovy
 dependencies {
-    implementation("org.jetbrains.kotlinx:kotlinx-datetime:0.2.1")
+    implementation("org.jetbrains.kotlinx:kotlinx-datetime:0.3.0")
 }
 ```
 
@@ -346,7 +347,7 @@ Add a dependency to the `<dependencies>` element. Note that you need to use the
 <dependency>
     <groupId>org.jetbrains.kotlinx</groupId>
     <artifactId>kotlinx-datetime-jvm</artifactId>
-    <version>0.2.1</version>
+    <version>0.3.0</version>
 </dependency>
 ```
 
diff --git a/gradle.properties b/gradle.properties
index d93f2a96a..d690274f7 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,7 +1,7 @@
 org.gradle.jvmargs=-Xmx1G -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8
 
 group=org.jetbrains.kotlinx
-version=0.2.1
+version=0.3.0
 versionSuffix=SNAPSHOT
 
 kotlinVersion=1.5.0