Join the beta app by 12 Oct and get 20% off the Galaxy S21 Ultra 5G. Plus you can get an extra $500 bonus for trading in an eligible device, subject to availability. Reward available between 24 Sept and 15 Oct 2021 via the Rewards & Offers Hub. T&Cs apply.*
Edit:
The website has been updated with the Google Play App link!
You will have to click the link which will take you to the Westpac app. Scroll down without opening the app if already installed. And you will see "join the beta" at the bottom.
In terms of overall discount, it wtill come out almost smilar to existing deal:
https://www.ozbargain.com.au/node/651606