Overview
- The Developer Edition, which launched Tuesday, October 27, is available for US preorder at $119.99 and is listed to start shipping around October 30–31.
- Logitech applied a laser‑etched, developer‑themed finish that includes Easter eggs such as “Hello, World,” “0xFF + 1,” and the 09.17 kernel reference.
- Under the shell the mouse is identical to the standard MX Master 4 and keeps the same features including the Haptic Sense Panel, Actions Ring, MagSpeed wheel, and up to 8,000 DPI sensor.
- Full haptic feedback and Actions Ring configuration require a Windows 11 update plus a Logi Options+ firmware/software update, and Logitech currently offers no Linux version of Options+ for those customizations.
- The release is primarily a limited cosmetic variant aimed at developers and collectors, and it spotlights a wider issue where device design choices can outpace cross‑platform software support for users.