The Waller Stable has announced Winx likely program for the autumn of 2029 (ha ha).
Looking at http://racingaustralia.horse/arb/Group_ListedRaceDates/2018-2019.aspx
(updated 14 Nov 2018) it seems her race dates are as follows:
16/02/2019. Apollo Stakes (G2)
2/03/2019. Chipping Norton Stakes (G1)
23/03/2019. George Ryder Stakes (G1)
13/04/2019. Queen Elizabeth Stakes (G1)
It also seems the gross prizemoney for these races is unchanged from last year, If the net remains the same and if (and its a big if) she happens to win all four than she will add AUD 3,516,250 (including trophies) to her total earnings.
Assuming AUD 1.00 = USD 0.72 and GBP 0.54 (a bigger 'if') she will be number 2 in USD with about USD 19,781,000 behind Buena Vista (JPN) 2006 (mare) on USD 19,883,807, number 2 in AUD on 26,451,175 behind T M Opera O (JPN) 1996 on AUD 29,003,944 and number 1 in GBP on about GBP 14,681,000 ahead of Arrogate (USA) 2013 on GBP 13,877,428 (USD 17,422,600) which also demonstrates the volatility of exchange rates over time.