Processor plugins don't register. Needs HOOK_ctools_plugin_type()

With todays ctools 7.x-1.0-rc2 (2012-03-17)
I found that the processor(s) were not registering or available from proxy_processors(), ctools_get_plugins('proxy', 'processors');

Looks like the tools API may have changed again?
I found that adding the following to proxy.module made things work as I believe are intended. The URLs get rewritten at least - which is what I wantd.

/**
 * Inform CTools about plugin types.
 *
 * @return array
 *  An array of plugin types, keyed by the type name.
 */
function proxy_ctools_plugin_type() {
  $plugins['processors'] = array(
    'use hooks' => TRUE,
  );
  return $plugins;
}

I also had to flush the cache aggressively once that was added, but that's ctools for you...

drush cc all;
drush php-eval "   ctools_include('plugins'); ctools_get_plugins_reset();"

I don't follow ctools development so I'm not sure this is the right approach - I'm just guessing by looking at the shape of the code.
But this is a nice small example module that I might find a handy way to learn how to use them (I've been making lots of tiny modules with tiny hooks instead until now, but knew I should be doing plugins instead)