Hi neooh,
JA Magz actually shows the “Content Type” when editting (create) article in Frontend (but not via JA Magz tab)
But we have an issue in T3 that limit we does this.
You can fix by open pluginssystemt3t3.php file and replace (at around line 140)
$extended = JPATH_ROOT . '/templates/' . $tmpl . '/etc/form/' . $form->getName() . '.xml';
by
$extended = JPATH_ROOT . '/templates/' . (is_object($tmpl) && !empty($tmpl->tplname) ? $tmpl->tplname : $tmpl) . '/etc/form/' . $form->getName() . '.xml';
We are still in progress of developing T3 and will release the new version that includes this fix.
Regards