I booked this deal earlier today. ARN-SYD in Sept. Via ZRH/HKG outbound (LX/VA). Via SIN/ZRH on way back (SQ/LX).
The fare did not show on google flights or swiss.com. I managed to find it on kayak.co.uk and was directed to a UK based OTA. The fare was £1610 although they had fares using LH via HKG for £1553.
Booking is showing on swiss.com but not ticketed yet. So holding my breath.