Updating Your iTunes RSS Feed
I recently had to update the iTunes RSS feed for New Covenant Church. I found this entry in the Podcast technical specification to be very helpful.
<itunes:new-feed-url>
This tag allows you to change the URL where the podcast feed is located. It is added at the level. The feed format is:
<itunes:new-feed-url>http://addr.com/example.rss</itunes:new-feed-url>
After adding the tag to your old feed, you should maintain the old feed for 48 hours before retiring it. At that point, iTunes will have updated the directory with the new feed URL. For more information, please see the “Changing Your Feed URL” section above.