[...] the basics of a tabbed interface are there. It's nice to see that the overall UI is quite similar to a browser window, which is good because it means that there's not a significant learning curve to familiarize yourself with the interface. You will notice the familiar Windows 11 design aesthetics too, such as rounded corners. Overall, I think it's quite aesthetically pleasing, even in its current unfinished state.
You can click on the "+" icon in the window to open more tabs. I did notice a slight stutter while the new tab populated with icons, which was a bit jarring, but then again, this is an early look so we can't fault Microsoft for this just yet.
I was pleased to see that if you copy and paste files between the same directories open in different tabs, both tabs automatically get refreshed to show you the updated view. Similarly, Snap Layouts work as expected too. I didn't notice any bugs in either of these processes which means that Microsoft has at least nailed the basics already.