Looks like a new offer from Qantas for the Qantas Premier Platinum card. Don't know if the Qantas $300 travel credit/voucher is received every year (like the Amex Travel credit is) or is only a 1 off.
Also combine with this offer for an extra 10,000 points-
https://www.ozbargain.com.au/node/395374
There’s no cap to the number of Qantas Points you can earn – at home or overseas.
Plus, 60,000 bonus Qantas Points when $4,000 is spent in the first 90 days from approval.International spend
1.5 Qantas Points per whole AU$1 equivalentDomestic spend (up to and including AU$10,000 per statement period)
1 Qantas Point per whole AU$1Domestic spend (over AU$10,000 per statement period)
0.5 Qantas Points per whole AU$1Qantas spend
1 additional Qantas Point per whole AU$1$299 Yearly fee
Doubt very much the travel credit is every year, else it'd be advertised as such.