When searching for "download" strings like this, it is vital to distinguish between official updates and third-party files:
: Ensure you own both "The Soroboreans" and "The Three Brothers" to trigger the Definitive Edition upgrade.
This specific build identifier corresponds to the major update released on . It marked the transition from the original game to the comprehensive Definitive Edition. Version: Definitive Edition (v1.0) Release Date: May 16/17, 2022