Overview

• Logitech says the MX Master 4 ships in October for $119.99 in multiple colors, with a Mac version lacking a dongle and the Windows package including a USB‑C Bolt receiver.
• A thumb‑rest haptic pad delivers customizable vibrations for pairing, low battery alerts, navigation, and app events, with a developer SDK planned to extend support.
• Pressing the side panel triggers an Actions Ring overlay with app‑specific shortcuts, including one‑click access to AI tools, all configurable through Logi Options+.
• Hardware carryovers include an 8,000‑DPI sensor that tracks on glass, the MagSpeed scroll wheel, ultra‑quiet clicks, roughly 70‑day battery life, and a 150 g build with connectivity described as twice as strong.
• Native haptic integrations at launch cover Photoshop, Lightroom, and Zoom with Premiere Pro to follow; the design remains right‑hand‑only, some plugins require signing into Options+, and buyers get a one‑month Adobe Creative Cloud offer.