From their email:
Your membership now includes unlimited listening to premium shorter programs, featuring ad-free podcasts, news, comedy, and exclusive shows.
Curated. New content daily, selected by our editors.
Convenient. Listen when you have a few minutes or are in-between books.
Cost free. Unlimited listening is included with your membership.
Now there's no need to go anywhere else to find the perfect listen. Just launch the Audible app, tap on Channels, and start listening.
The Link
My app isn't up to date (I hate losing all my bookmarks etc), so I haven't tried it. (You have to have the latest version.)