I’m loving most of iOS 27, but I think these are the two screens that need the most work currently.
The call buttons look tall and oblong because the background is so dark that you can’t see the shadows. The new tab page doesn’t “pop” or seem to lift off the page with layers the way most of iOS 27 does. It mostly just looks like Show Borders is turned on in Accessibility.
Contacts and Weather also look bad when the glass slider is pushed to the far right. They look good when the slider is at the center. I hope they add the slider to Per-App settings eventually to solve this.