Home Single-Family News Center Desktop Underwriter Version 11 Release Notes February 11, 2021 Desktop Underwriter Version 11 Release Notes During the weekend of March 13, 2021, Fannie Mae will implement Desktop Underwriter® (DU®) Version 11.0. Read the release notes for more information. Download release notes Recent News July 2, 2025 Announcement SEL-2025-05: Selling Guide Updates June 30, 2025 Testing Available for UCD v2.0 Specification and UCD Critical Edits June 18, 2025 Lender Letter LL-2025-02 Advance Notice of Changes to Servicing Processes and Systems