Ruby5: A Twice-Weekly 5 Minute Ruby News Podcast
Ruby5 is a new twice weekly podcast dedicated to Ruby and Rails news. It's headed by Gregg Pollack (formerly of the RailsEnvy podcast which Jason Seifer has now taken over) and Nathan Bibler. They aim to cover several bits of Ruby and Rails news in five minutes. You can also leave comments about the stories on their site as you listen. As of today, there are 7 episodes in the archives if you want to catch up, all in the 5-6 minute range.
I'm not a big fan of listening to news, but Ruby5 has done a great job of also making it possible to learn about what they've featured without listening to the audio if you don't want to.