Greetings! I'm hoping for a "staff answer" for this one...
If you're a podcast producer who lists their podcast(s) in the iTunes Store, you may have recently received an e-mail, such as I did, from Apple outlining a couple updates to their requirements. One has to do with cover art (makes sense considering today's retina displays) and the other is a web server configuration detail. Here are the pertinent paragraphs:
New Cover Art Requirement
iTunes has been completely redesigned and there are new requirements for podcast cover art. To be eligible for featuring on iTunes Store, a podcast must have 1400 x 1400 pixel cover art in JPG or PNG format using RGB color space. The image URL must end in ".jpg", ".jpeg" or ".png" and the server hosting the image must allow HTTP HEAD requests. See our technical spec for details.
Server Configuration Requirement
Podcast streaming playback on iTunes requires all hosting servers to enable Byte Range Requests. Please confirm your hosting servers have this functionality enabled. If you work with a third-party hosting service, please contact them to confirm this functionality is enabled on their servers.
Can anyone verify whether WordPress.com both supports HEAD requests and Byte Range requests? I apologize if this is something that can be easily checked from afar...it's been quite a while since I ran a server myself (that's why I use this site, hehe) and I don't have much in the way of developer tools or HTTP packet inspection stuff installed on my desktop anymore.
Thanks in advance! :)