Received this communication in email today - below is what I understand:

In Savings Maximiser, to be eligible for the bonus interest rate (which is 1.70% at present) on balance upto $100,000, customers had to meet some conditions in the prevous month i.e. deposit $1000 or more from an external account and make 5+ settled card purchases.

As per the communication, from 1 April until 30 June 2020 you'll get their bonus rate of 1.70% p.a variable on your Savings Maximiser account that received bonus interest in January, February or March 2020, without needing to do anything more.

Their standard variable rate is 0.10% p.a. With the bonus rate, you get a total of 1.80% p.a. (as per current) for the month/s you're eligible for it.

P.S. While you don't need to do anything to earn bonus interest in April, May or June 2020, to enjoy free ATMs and no ING International Transaction Fees you'll still need to meet the monthly eligibility criteria above. [copied from the email].