// Feaured image tweaks
function development_image_box() {
remove_meta_box( 'postimagediv', 'development', 'side' );
add_meta_box('postimagediv', __('Development image'), 'post_thumbnail_meta_box', 'development', 'side', 'high');
}
add_action('do_meta_boxes', 'development_image_box');
//
// in CPT
// 'featured_image' => "Development image",
// 'set_featured_image' => "Choose development image",
//'remove_featured_image' => "Remove development image",
//'use_featured_image' => "Use as development image",