I was fortunate enough to get one of the Design Labs late last week, which meant that I spent Friday morning frantically doing as many first-pass updates to the new design as I could. I then was able to discuss many of them during the lab and learned a bunch.
Like David, I was thinking that Liquid Glass should be applied in a bunch of places, but as he writes, that’s not quite the case:
Something my design lab consultant said, which was really clarifying for me, was that Liquid Glass should generally be used to highlight content underneath the button. So if that content is plain/flat, then it is likely not appropriate. In this case, if the button was over the map preview, then it might be appropriate, but since the whole section is tappable, then I’d have two levels of interactivity, which is generally not great.
Be sure to check out the examples from his early work on the iOS 26 update for Pedometer++.