At some stage, you might need to change the podcast feed URL of your podcast listed in the iTunes directory. In order to do so, you’ll need to tell the iTunes podcast directory that a new feed URL is available by inserting a <itunes:new-feed-url /> tag into your XML structure. See the example below.

<?xml version="1.0" encoding="UTF-8"?>
<rss xmlns:itunes="http://www.itunes.com/dtds/podcast-1.0.dtd" version="2.0">
<channel>
<itunes:new-feed-url>http://www.domain.com/?feed=podcast</itunes:new-feed-url>
</channel>
</rss>

Once you have done this, the iTunes will react on your server’s 301 redirect request and immediately load the new feed URL, listing its items both inside the iTunes directory and the iTunes application of all your currently active podcast subscribers.