You’ll need to opt into the beta, which says,
“Google Inc. has invited you to a testing program for an unreleased version of the Google app.
As a tester, you’ll receive an update that includes a testing version of the Google app. Please not that testing versions may be unstable or have a few bugs.
Send your feedback to Google Inc. using the contact information: [email protected]”
Below that text, you’ll see a button that says “Become a tester,” and below that, will be a link allowing you to “Download the Google app on Google Play.”
There’s a chance that beta users will be able to test upcoming Google Now features, new user interface designs, new search features, and more.
Although not officially announced, Google is displaying Google Now cards in the app, asking people to try out the beta. The teaser says, ““Preview new Google features: Join the Google app beta program to play with experimental features before they’re released. Because you’re interested in technology.”