WWDC25: Design foundations from idea to interface | Apple by Apple Developer

Probably the best app design video from this year's WWDC. Walking through an example definitely helps me to see the bigger picture.

I was looking for a resource to help me decide when I should apply Liquid Glass to my own components depending on the layer but it's not clear to me at all beyond buttons and controls.

I will be updating Kop Quiz for iOS 26 with my first take but I'll have to see how others, especially Apple, have approached Liquid Glass across all their apps before performing more updates.