Got this email thanks to Taste of Perth.
Tried it out for sample dates 19 May - 7 June from Perth to London and saved $126 off the fare of $1587 (~8% off), YMMV.
"TO BOOK, VISIT etihad.com & ENTER PROMO CODE: TASTEAU16.
Valid for travel until 15 March 2017. But hurry - offer ends 6 May 2016!
*Subject to availability. Offer ends 06MAY2016. Available for departures from Perth, Melbourne, Sydney and Brisbane for travel until 15MAR2017. Not valid on private fares or open jaw (multi-destination) bookings. Valid for economy, business and first class cabins only. Bookings must be made online and payment must be made during the booking process.
Offer includes travel to Amsterdam, Athens, Belgrade, Berlin, Brussels, Dublin, Dusseldorf, Frankfurt, Edinburgh, Geneva, Istanbul, Larnaca, London, Madrid, Manchester, Milan, Moscow, Munich, New York, Chicago, Washington D.C., Paris, Rome, Stuttgart, Venice, and Zurich only. Some flights may be operated by code share partners. Etihad’s 787 will commence operations from Perth from 02JUN2016. Product and class availability varies depending on aircraft type. Other terms and conditions apply. "
How much are they discounted ???