Thursday, June 19th 2025
Logitech's Upcoming MX Master 4 Leaks
The first decent high-resolution images of Logitech's upcoming MX Master 4 mouse has leaked, courtesy of the EUIPO or European Union Intellectual Property Office, which is somewhat embarrassing when you consider that the EUIPO claims to protect your intellectual property. Anyhow, the mouse appears to have been given some major design updates, without straying too far from its predecessor. Most notably, it now has two buttons that cover the entire front of the mouse, which makes it look a lot cleaner than the MX Master 3s that has a bit of plastic on the right side of the right button. They also almost appear to be translucent, but that could just be the renders.
Gone are all the ridges on the thumb rest and read of the mouse and the thumb rest button appears to now be the entire side surface, rather than just the bottom of the thumb rest. It's unclear what the circle made up of dots is meant to symbolise though, but it appears that Logitech has come up with some new kind of functionality for the thumb rest button. A third thumb button has also been added in front of the previous two and the thumb scroll-wheel appears to be protruding rather than being slightly recessed as it is on the MX Master 3s. Finally there's an LED just behind the scroll-wheel lock button, which most likely is a battery/charge indicator. The MX Master 4 should be launching any time now, as the first leak was already a couple of weeks ago.
Sources:
EUIPO, via Notebookcheck
Gone are all the ridges on the thumb rest and read of the mouse and the thumb rest button appears to now be the entire side surface, rather than just the bottom of the thumb rest. It's unclear what the circle made up of dots is meant to symbolise though, but it appears that Logitech has come up with some new kind of functionality for the thumb rest button. A third thumb button has also been added in front of the previous two and the thumb scroll-wheel appears to be protruding rather than being slightly recessed as it is on the MX Master 3s. Finally there's an LED just behind the scroll-wheel lock button, which most likely is a battery/charge indicator. The MX Master 4 should be launching any time now, as the first leak was already a couple of weeks ago.
29 Comments on Logitech's Upcoming MX Master 4 Leaks
If Logitech didn't want to have it published they should have waited longer to file, so that it didn't publish before the product release. It's certainly no fault of EUIPO.
Happy owner of MX 3.
What is with the shape of the primary buttons?
Every normal, uninjured person on earth has a longer middle finger than their index finger, so why is the left button longer than the right button? To make matters worse, the pivot point is even further forward on the right button, shortening it even more - so presumably the difference in actuation pressure and button feel is going to be wildly different between left-click and right-click on this weird asymmetrical design?
However the soft-touch coating on my MX 3 bothers me a lot more.
and not this shape: