I don't know how many people have noticed, but the Navigation Bar Style in the videos of Google's Material Design Website aren't consistent. They keep changing between the "Shapes" one and another kind which doesn't look familiar.
Maybe the other one can be brought out once modders have a go at L
Btw, the video is in the meaningful transitions section of animation. Its the image gallery video.
I'm actually on my phone and hence can't upload the image...Will do so later