Apple released Podcasts for iOS
If you're into podcasting and keeping up with your favorite sites and online persona's thoughts and ramblings you'll be happy to know that Apple has released a new app called Podcasts
Podcasts app is the easiest way to discover, subscribe to and play your favorite podcasts on your iPhone, iPad, and iPod touch. Explore hundreds of thousands of free audio and video podcasts from the Podcasts Catalog, and play the most popular podcasts, organized for you by topic, with the all-new Top Stations feature.
So there you have it, thought to have been included as a built in on iOS 6 it's a stand alone app so you can enjoy it now.