I’m currently testing out a new version of my code to include custom post types in The Loop. So far, I haven’t found any functional differences. I’d like to do some things with post type archives and a possible `is_type()` function that would make my life easier when working with theme development, hence the change. I’m also trying out `any` instead of an array of post types.
[[wp-hackers] ‘request’ filter for adding custom post types to blog indexes](http://lists.automattic.com/pipermail/wp-hackers/2010-August/033951.html)