Google Camera app version 2.4.008 that was present in the Android Lollipop Developer Preview has Material design elements. Today Google has updated the Google Camera app to version 2.4.023 on the Play Store that brings the same material design elements to the app. This update also brings compatibility with Android 5.0 (Lollipop) that would roll out for Nexus devices in coming weeks and includes some improvements and bug fixes.
After the Google Play Store, Google Chrome, Google Play Newsstand, Google Play Music, Google Play Movie and TV, Google Drive, Docs, Sheets and Slides, and more recently the Google Play Book have got new Material redesign.
Google released the Google Camera app on Google Play earlier this year. Since then the app has been updated frequently with new features. It was recently updated with remote shutter feature for Android Wear and redesigned Panorama mode UI. Google has started updating all its apps with new Material Design interface to match Android 5.0 (Lollipop).
The new Google Camera update is now available from Google Play Store.