Logitech MX Master 4 Leaks Reveal Refined Design and New Features Ahead of Launch

Next-Gen Logitech MX Master 4 Mouse Surfaces Online

The highly anticipated Logitech MX Master 4 wireless mouse has surfaced early, thanks to recent filings with the European Union Intellectual Property Office. Leaked images and documentation highlight Logitech’s approach to iterative innovation, building on the acclaimed MX Master 3—which is widely regarded as one of the top productivity mice available.

Subtle but Smart Design Upgrades

According to sources at Notebookcheck and Guru3D, the upcoming MX Master 4 retains the signature ergonomic design that has earned the series a loyal following among professionals and tech enthusiasts. However, Logitech has implemented several key refinements to enhance the user experience even further. Notably, the left and right mouse buttons are now noticeably wider, spanning the entire top shell rather than stopping short like their predecessors. This small yet meaningful change is likely to improve both comfort and ease of use for long hours at the desk.

Enhanced Thumb Rest and Extra Shortcut Button

Another upgrade comes in the form of a redesigned thumb rest. While its size appears similar to the previous model, the structure and materials have shifted. The new thumb grip is compartmentalized rather than extending around the back, and may use a new textured surface for improved grip during intensive workflows or prolonged sessions. In a move sure to please power users, Logitech has also added a third side button, offering even more customization options for shortcuts and productivity tools.

A peculiar dotted circle on the thumb rest has also been spotted—it may serve as a new button or a unique functional feature, but its purpose remains unconfirmed. This detail hints at possible new capabilities that could set the MX Master 4 apart from its competition.

Repositioned LED Indicator and Platform Compatibility

In a design shift, the LED indicator light has moved to sit just behind the DPI button on the mouse’s top panel, streamlining visibility for users. Although Logitech has yet to announce official hardware specifications, pricing, or release dates, the MX Master 4 is expected to continue supporting both Windows and macOS platforms—catering to a broad range of productivity and creative professionals.

What To Expect from the MX Master 4

Given the success and critical acclaim of the MX Master 3, the next-generation MX Master 4 is poised to deliver even greater performance with its improved ergonomics, additional controls, and (hopefully) longer battery life combined with upgraded internals. These enhancements could make it a top choice for graphic designers, coders, video editors, and anyone seeking a top-tier wireless mouse for advanced workflows.

Stay tuned for more updates on the Logitech MX Master 4 as official details emerge. As the market for high-end productivity accessories continues to grow, Logitech’s latest innovation aims to set a new standard for design and functionality.

Images and layout remain as shown in the original leak documents.