Copper

Copper
Version of Microsoft Windows
Windows 11 logo and wordmark.svg
Windows11-10.0.25120.1000-Desktop.webp
OS familyWindows 11 (NT 10.0)
Version
Codename
Preliminary name
SemesterCopper
ArchitectureAMD64, ARM64
Latest build10.0.25120
Release date
Support end
Replaces
Nickel

Copper is the 23H2 development semester of Windows as a service which work began for in February 2022. appraiserres.dll from build 25075 suggests that the 2023 update of Windows 11 may be based on the Copper codebase.

List of known builds[edit | edit source]

Pre-Dev Channel[edit | edit source]

Dev Channel (rs_prerelease branch)[edit | edit source]