The ClickHouse newsletter for January 2025 covers various topics, including the release of version 24.12, which introduced support for the Apache Iceberg REST catalog and schema evolution. The newsletter also features articles on building a product analytics solution with ClickHouse, optimizing bulk inserts for partitioned tables, and exploring the Medallion architecture with ClickHouse. Additionally, there are videos from the All Things Open Conference, including talks by experts in data engineering and analytics. The newsletter highlights the work of community members, such as Jason Anderson, who shares his experience building a product analytics platform using ClickHouse. Various training events and meetups are also listed, including free training sessions and events in different regions. The newsletter concludes with a "Post of the month" section featuring an article by Dmytro Shevchenko.