RDA Northern Inland has put up a link on their website where you can sign up with your email. Once you have signed up, you can receive email updates when the regional area is open and accepting further applications for 489 visa. We have provided both the links below:
RDA NI website: http://www.rdani.org.au/skilled-migration/skilled-regional-nsw-sponsorship.php
Sign Up here: https://pages.convertkit.com/d810f42546/20e0bb9c91