This was perhaps the biggest technical shift. Unlike the original WSL, version 2 included a real Linux kernel, offering full system call compatibility and significantly faster file system performance.
Build 19041 updated the Task Manager to display GPU temperatures and differentiate between Disk types (HDD vs. SSD), providing better hardware monitoring at a glance. Technical Build Details windows-10-2004-10-0-19041-264-may-v2-2020
While the rollout was initially cautious due to compatibility holds for certain hardware drivers, version 2004 became a stable baseline for subsequent "enablement package" updates (like 20H2 and 21H1). It proved to be a durable build that balanced new developer-centric tools with necessary quality-of-life improvements for everyday users. This was perhaps the biggest technical shift