There have been several recent leaks of new Surface products that may be announced at Microsoft’s big hardware event on October 2nd, including the Surface Pro 7, Surface Laptop 3, and an ARM-powered Surface 2-in-1 laptop. Now, leaker Evan Blass has spilled details about Windows 10X, which is said to be Microsoft’s fork of Windows 10 that’s built for dual-screen devices.

Of course, a dual-screen Surface product (codenamed “Centaurus”) is rumored to make its debut at the big Surface event. Based on Blass’ tweet, it will run on Windows 10X, which has been previously referred to as Windows Lite.

While the tweet shared no images of the software, it states that Windows 10X is made to run on dual- and folding-screen devices. Compared to standard Windows 10, 10X might run applications in “containers.” As for what that means, 10X may lean on virtualization to run a majority of the apps over the internet instead of running them locally off of the hardware.

The Verge will be covering Microsoft’s big event tomorrow, October 2nd, starting at 10AM ET, so tune in to see if this and all of the other leaks pan out. Hopefully, Microsoft will still have a few surprises left in store, so stay tuned.