Microsoft adds Dev Drive block cloning to Windows

At the heart of developer productivity lies improving performance for developer workloads on Windows. Last year at Build, we announced Dev Drive a new storage volume tailor-made for developers and supercharged for performance and security. Since then, we have continued to invest further in Windows performance improvements for developer workloads.

With the release of Windows 11 24H2, workflows will get even faster when developing on a Dev Drive. Windows copy engine now has Filesystem Block Cloning, resulting in nearly instantaneous copy actions and drastically improving performance, especially in developer scenarios that copy large files.

Pavan Davuluri on the Windows blog

Sounds like a near and meaningful improvement.