Post Formats are not the same as Custom Post Types. WordPress has five major default Post Types (Post, Page, Attachment, Revision and Nav Menu) and in the release of WordPress 3.0, we were given the ability to register our own types, e.g. Podcast, Book, Gallery etc. These new types appear separately within WordPress admin panel and are independent “channels” of content.
In contrast Post Formats are applied to the Post Post Type and add an additional piece of information that can then be used for formatting on a per post basis.
„Více »“:http://www.netmagazine.com/features/wordpress-post-formats-made-easy