For a major update, it looks and feels almost the same as before. The Ul hasn’t evolved. There’s still no haptic feedback for the brightness or volume sliders, the battery icon is unchanged (even Google updated their years-old battery status icon) while even Pixel OS, known for being minimal, includes these touches. On top of that, there’s no lock screen customization at all, which makes the OS feel outdated compared to other brands.
I know this is still in beta, but it seems most of the features are already finalized - and right now, Nothing OS 4 feels underwhelming and lacking polish.