Question

Is there a different hook I can use to get the node_id of a NEW node that is submitted?

function dc_project_management_form_bug_request_node_form_alter(&$form, &$form_state, $form_id)
{
    $form['#submit'][] = 'dc_project_management_process_bug_request_milestone_submit';
}

function dc_project_management_process_bug_request_milestone_submit($form, &$form_state)
{
    //NULL when submitting new node
    $form_state['values']['nid'];
}

Answer 1

The node hasn’t actually been saved at that point, you need to implement hook_node_insert:

function dc_project_management_node_insert($node) {
  $nid = $node->nid;
}