Nearly two months after we first saw the in-progress Hangouts 4.0 update, we were starting to worry it would never make its official appearance on the Play Store. But recently our collective wish was granted and Hangouts got a big update. Google says this is Hangouts' update to material design, but what exactly does that mean for the app? There's more here than just a new FAB, so let's take a closer look at some of the notable design changes in Hangouts 4.0.

The journey to material

Despite what the change log may suggest, Hangouts didn't suddenly arrive at "material" with the 4.0 update.

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