“Among the biggest changes is nondestructive filters. Previously applying filters, such as blurs, was final—you could use the undo function to get back to a pre-filtered state, but you couldn’t simply edit or remove the filter. You can now tweak the settings of filters, or even remove filters entirely from the layer panel.”
The UI scaling is a lot better now, but I still struggle a bit with the interface, trying to find what I want to use. So I set a few tweaks and must say it looks a bit easier for me now.
I included a screenshot with this post, but I set the Icon theme to Default (mine was on Legacy) and disabled the Use symbolic icons toggle. I toggled on the merge menu and title bar, and toggled off the Use tool groups. The last setting just makes it easier to scroll over all those icons to see what does what.