My answer is assuming you mean in the admin area on the post editing screen.
Unfortunately there are no hooks to add things above the title.
I did track down a (very hacky?) way to do this, however, by looking at the code for Premise (a landing page plugin by Copyblogger Media).
Hook into something like dbx_post_sidebar
, which is below all the post editing stuff and metaboxes. Echo out your image with a style attribute containing display:none;
<?php
add_action( 'dbx_post_sidebar', 'wpse27700_add_image' );
function wpse27700_add_image()
{
echo '<img id="wpse27700-image" src="http://placebear.com/500/100" alt="wpse27700 bear" style="display:none;" />';
}
Then using jQuery you can remove the image and place it above the title. I just hooked into admin_head
to do this, but you can also enqueue a separate js file or whatever.
<?php
add_action( 'admin_head', 'wpse27700_admin_head' );
function wpse27700_admin_head()
{
?>
<script type="text/javascript">
jQuery(document).ready(function(){
var wpse27700 = jQuery('#wpse27700-image');
wpse27700.remove();
jQuery('#titlediv #titlewrap').before(wpse27700.show());
});
</script>
<?php
}
Not the most direct solution, but it works. As a plugin: https://gist.github.com/1193612