This appears to be a new benefit for Gold and Platinum members at no additional cost. I've been playing with the app and there's quite a bit of short listens on there. Perfect for short commutes, lunch breaks, doctors office, standing in long lines, etc. Not sure how much additional content they'll add when they go out of beta or how long the content will stay or rotate.
Audible Channels
70+ channels of fresh, curated listening.
Audible Channels expands your listening options with an entirely new and diverse suite of programming.
What does Channels cost?
Nothing! Channels is a free benefit for Audible members.
Are there limits on how much I can listen?
Nope. Members get unlimited listening (unless your account is on hold).
Can I listen to Channels on the web? On Kindle?
Channels is only available within the iOS and Android apps at this time.
.