Ends on 23 Jan as noted in first link.
Bonus points promotion: The respective bonus points promotions are available when you apply and are approved for a new Amplify Signature credit card between 18th December 2018 and 23rd January 2019, and spend the minimum amount of $4,000 on eligible purchases on the credit card within 90 days from card approval. Eligible purchases do not include BPAY or BPAY equivalent transactions, fees, cash, cash equivalent transactions, refunds, balance transfers debited from the card account, government fees and ATO payments. Existing customers who currently hold a Amplify Platinum or Amplify Signature card issued by St.George, Bank of Melbourne or BankSA, or who have held one in the last 12 months, are not eligible for this offer. The bonus points will be credited to your points balance within 12 weeks after the eligible spend criteria is met.