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+---
+date: 2026-06-14
+title: Apache Iceberg C++ 0.3.0 Release
+slug: apache-iceberg-cpp-0.3.0-release
+authors:
+  - iceberg-pmc
+categories:
+  - release
+---
+
+<!--
+ - 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
+ - (the "License"); you may not use this file except in compliance with
+ - the License.  You may obtain a copy of the License at
+ -
+ -   http://www.apache.org/licenses/LICENSE-2.0
+ -
+ - Unless required by applicable law or agreed to in writing, software
+ - distributed under the License is distributed on an "AS IS" BASIS,
+ - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ - See the License for the specific language governing permissions and
+ - limitations under the License.
+ -->
+
+The Apache Iceberg community is pleased to announce the 0.3.0 release of Apache [Iceberg C++](https://github.com/apache/iceberg-cpp). This release includes [over 140 pull requests](https://github.com/apache/iceberg-cpp/compare/v0.2.0...v0.3.0) from 23 contributors, including 11 first-time contributors.
+
+`iceberg-cpp` is a native C++ implementation of the Apache Iceberg table format, providing libraries for reading, writing, and managing Iceberg tables in C++ applications.
+
+<!-- more -->
+
+## Release Highlights
+
+### Scan Planning and Data Access
+- [Incremental scan APIs](https://github.com/apache/iceberg-cpp/pull/559), [incremental append scans](https://github.com/apache/iceberg-cpp/pull/590), and [incremental changelog scans](https://github.com/apache/iceberg-cpp/pull/611) for planning table changes between snapshots
+- Merge-on-read data access with a [MOR file scan task reader](https://github.com/apache/iceberg-cpp/pull/657), [delete filter support](https://github.com/apache/iceberg-cpp/pull/650), and a [DeleteLoader for position and equality delete files](https://github.com/apache/iceberg-cpp/pull/610)
+- [Column selection in table scan planning](https://github.com/apache/iceberg-cpp/pull/550) and [ManifestGroup file filtering](https://github.com/apache/iceberg-cpp/pull/664)
+- [Roaring-based position bitmaps](https://github.com/apache/iceberg-cpp/pull/595), a [position delete index](https://github.com/apache/iceberg-cpp/pull/605), and [range coalescing for position deletes](https://github.com/apache/iceberg-cpp/pull/645)
+
+### Table Operations and Maintenance
+- [MergingSnapshotUpdate](https://github.com/apache/iceberg-cpp/pull/682) for rewrite-style operations
+- [SnapshotManager](https://github.com/apache/iceberg-cpp/pull/542) support and [retried transaction commits](https://github.com/apache/iceberg-cpp/pull/626)
+- Snapshot expiration cleanup strategies for [reachable file cleanup](https://github.com/apache/iceberg-cpp/pull/592) and [incremental file cleanup](https://github.com/apache/iceberg-cpp/pull/648)
+- [Partition statistics updates](https://github.com/apache/iceberg-cpp/pull/538) and [schema update mapping](https://github.com/apache/iceberg-cpp/pull/561)
+
+### Catalogs and Integrations
+- REST catalog improvements including [initial OAuth2 support](https://github.com/apache/iceberg-cpp/pull/577), [OAuth2 token auto-refresh](https://github.com/apache/iceberg-cpp/pull/646), [Basic authentication](https://github.com/apache/iceberg-cpp/pull/564), [snapshot loading mode](https://github.com/apache/iceberg-cpp/pull/543), [namespace separators](https://github.com/apache/iceberg-cpp/pull/617), and [server-side REST scan planning endpoints](https://github.com/apache/iceberg-cpp/pull/614)
+- [S3 FileIO integration](https://github.com/apache/iceberg-cpp/pull/548) built on Arrow filesystem support
+- FileIO interface enrichment with new [InputFile and OutputFile interfaces](https://github.com/apache/iceberg-cpp/pull/641) and [bulk delete support](https://github.com/apache/iceberg-cpp/pull/659)
+- [SQL catalog support](https://github.com/apache/iceberg-cpp/pull/693) backed by SQLite, PostgreSQL, and MySQL stores
+
+### Metrics and Observability
+- Metrics reporter support with [report JSON serialization and reporter loading](https://github.com/apache/iceberg-cpp/pull/589)
+- [Avro writer metrics](https://github.com/apache/iceberg-cpp/pull/604) and [Parquet writer metrics](https://github.com/apache/iceberg-cpp/pull/651)
+
+### Metadata and File Format Support
+- Puffin support with [basic data structures](https://github.com/apache/iceberg-cpp/pull/588), [format constants and JSON serialization](https://github.com/apache/iceberg-cpp/pull/603), and [file reader/writer support](https://github.com/apache/iceberg-cpp/pull/624)
+- Iceberg v3 support for the [unknown type](https://github.com/apache/iceberg-cpp/pull/662) and [nanosecond timestamp primitive types](https://github.com/apache/iceberg-cpp/pull/653)
+- Expression serialization with [operation JSON serialization](https://github.com/apache/iceberg-cpp/pull/532), [expression JSON serialization](https://github.com/apache/iceberg-cpp/pull/553), and [typed literal binding after serialization](https://github.com/apache/iceberg-cpp/pull/562)
+
+## Contributors
+
+```
+$ git shortlog --perl-regexp --author='^((?!dependabot\[bot\]).*)$' -sn v0.2.0..v0.3.0
+    26  Gang Wu
+    26  Junwang Zhao
+    11  wzhuo
+     8  Kevin Liu
+     8  Xinli Shang
+     7  Feiyang Li
+     7  Zehua Zou
+     6  lishuxu
+     4  Innocent Djiofack
+     4  liuxiaoyu
+     3  Guotao Yu
+     3  ZhaoXuan
+     3  slfan1989
+     2  Manu Zhang
+     2  Minh Vu
+     2  Sebastian Baunsgaard
+     2  SkylerLin
+     2  姚军
+     1  Jiajia Li
+     1  Maxim Zibitsker
+     1  Sandeep Gottimukkala
+     1  Sung Yun
+     1  Yingfan Guo
+```
+
+This release welcomes 11 first-time contributors to Apache Iceberg C++: @evindj, @manuzhang, @mzibitsker, @fallintoplace, @gsandeep1241, @Baunsgaard, @linguoxuan, @sungwy, @sentomk, @zhaoxuan1994, and @SYaoJun.
+
+We thank all contributors for their efforts in making this release possible!
+
+## Roadmap for 0.4.0
+
+The community is actively tracking the next release in [#637](https://github.com/apache/iceberg-cpp/issues/637), with a focus on filling out Iceberg v3 support and expanding table maintenance APIs.
+
+## Getting Involved
+
+We welcome questions and contributions from all interested. Issues can be filed on [GitHub](https://github.com/apache/iceberg-cpp/issues), and questions can be directed to GitHub or the [Iceberg dev mailing list](https://iceberg.apache.org/community/#mailing-lists).