Blubrry PowerPress was updated to version 4.0, from version 3.0.1. Changelog:

• Released on 5/11/2012
• New iTunes image requirements updated throughout plugin. RGB 1400×1400 jpg is recommended.
• Feed Episode Maximizer feature added, only applies to podcast channel feeds.
• Added VideoJS video player option, requires “VideoJS – HTML5 Video Player for WordPress” plugin to be installed and activated.
• Enhanced support for uploading RSS/iTunes images, the iTunes image upload now checks for 1400×1400 or larger jpg/png image in RGB color space.
• Notice message regarding new iTunes image requirements added to dashboard.
• Added .epub to list of file content types supported.
• iTunes image can now also be used as the RSS image.
• Additional information added to powerpress shortcode documentation.
• iTunes block episode feature added, requires following define in wp-config.php: define(“POWERPRESS_NOT_SUPPORTED”, true);
• iTunes block feed feature added, requires following define in wp-config.php: define(“POWERPRESS_NOT_SUPPORTED”, true);
• iTunes complete feed feature added, requires following define in wp-config.php: define(“POWERPRESS_NOT_SUPPORTED”, true);
• iTunes order episode feature added.
• Feature Episode in iTunes option added, allows you to put specific episode at the top of your iTunes podcast directory listing.
• ref=Nofollow tags added to play in new window, download and embed links.
• Fixed warning message when metamark’s default row is removed and does not exist upon saving.
• Increased the performance of the podcast only and podcast channel feeds.
• Removed “new” from no longer new features.
• iTunes default image updated to 1400 x 1400.
• PowerPress 3.0 is not compatible with WordPress 2.8.x and 2.9.x. Please upgrade to WordPress 3.0 or newer to install PowerPress.
• Translation support is now complete. Please visit the following link if you would like to have a version in your language: http://www.blubrry.com/powerpress_translate/