This page lists the major changes released for Google Chat's developer platform. It is intended to help developers identify recent changes in behavior.
Material Design cards for Google Chat on the web
June 16, 2022
On the web, Google Chat cards now match Google Material Design. The Material Design cards feature aesthetic enhancements that improve usability and render faster.
To include Material Design cards in your Chat apps, you don't need to change your code. Cards now automatically render with Material Design.
The following screenshots show a comparison between a legacy, non-material card (figure 1), and a material one (figure 2):
Developer Preview: Material Design cards for Google Chat on mobile devices
May 15, 2022
On mobile devices, Google Chat cards now match Google Material Design. The Material Design cards feature aesthetic enhancements that improve usability and render faster.
To include Material Design cards in your Chat apps, you don't need to change your code. After you're accepted into the developer preview, and later, after the feature launches for everyone, cards will automatically render with Material Design.
The following screenshots show a comparison between a legacy, non-material card (figure 1), and a material one (figure 2):