re "chg" were you looking to LAX or to JFK as the QF 11/12 aircraft changes to a 787 at LAX for the JFK tag. That would explain that.
Otherwise, QF11/12 has been an A380 for years, and it won't change anytime soon.
Also regarding the QR experience - you cannot equate aircraft configurations across airlines. The QR product is quite different to what QF currently offers on the A380 which itself is inferior to the newer 787 J suite product. While QF will start upgrading the A380 cabins to include a similar suite product in J on the 380, it won't be in the air for August almost certainly so you'd have 2-2-2 Skybed2 seats. However you would potentially have the ability to upgrade to F.