Saturday 15 June 2019 will see QF7, the lunchtime 1235 hours A388 for the long flight from SYD to DFW delayed until a predicted 1910 in its departure. Same day arrival should be 1850 hours, 350 minutes late.
This is due to the Thursday 13 June's QF12, the 2230 hours scheduled ex LAX not departing until 0903 on Friday 14 so Saturday 15 SYD arrival is forecast as 1715 hours, 645 minutes tardy. While those delayed may not share this view, this would be a good schedule for 'the 12' but QF and other airlines believe that more revenue comes from the traditional late night departures. However departing at 0900 or 1000 and arriving at 1700 or 1800, at a time when hotels can check one in, or one can go home, have an evening meal and sleep, and there are still connecting flights available in Oz to many destinations departing at around 1900 - 1930 hours makes a lot of sense.
The QF7 delay today should not affect QF8 due out of DFW at 2225 hours on Saturday night, unless this afternoon/early evening's Sydney turnaround of the delayed '12' to 'the 7' takes longer than expected.
A388 VH-OQA (apparently hit by a catering truck in LAX as advised by AFFer milehighclub above) remains in LAX so with, as Quickstatus said, another QF A380 under maintenance in Dresden, Germany, these disruptions to the A388 roster will continue. The bill for repairs, and the cost to QF in arranging hotels for delayed passengers, altered staff arrangements and so on wouldn't be cheap. Depending on which operator's catering truck hit the 'bird', there could be a substantial bill to some other entity, or a sizeable insurance claim.
It's terrific that people like milehighclub (amusing username) 'fill in' the missing detail. Huge thanks to this lady!