Google Currents gets cross-device syncing
Aside from that, Google has also added quite a lot of features for feeds that contain audio. There is a new "story scanner" button which allows you to easily start audio that's in an article, and an option to create playlists of audio from a feed you follow. Once you're playing audio, there are in-app controls, as well as audio controls in your navigation tray.
Definitely a solid update that really adds to the usability of Google Currents. If you want to try it out, it's available for free in the Google Play Store.