It stated in the email that the migration program planning levels for the skilled nominated category (190) now has limited number of places left which means that processing times will be longer and once the remaining places are used, they cannot grant further visas during this program year. They encourage all applicants to check the department's website for any updates or changes that may affect everyone.
I don't want to dishearten anyone but what I would suggest is for you to go through your application once more and make sure that you've attached all the anticipated documents so that if the CO gets allocated you'd have the chance for a DG. I have a friend who lodged for a 190 visa this April and he was contacted by the CO which means na umuusad pa naman ang pila kaya while you have the chance, check your documents again.
@ninyeh @admt2016 @jedh_g