I'm in the same boat - QF5 on 18APR14 and QF6 on 21APR14. The re-timing has thrown out our connecting flights from and to MEL by a little. Also, the three of us were seated in Row 29 (bulkhead row) of Y+ and the config has now changed with Y+ from Rows 34-37. Strangely we've been moved to the very back row (37) which I'm not overly impressed with 
Luckily the connecting flights booked into B fare bucket and could easily be moved backwards and forwards without hassle by the Platinum service centre.
Not sure what has brought about the re-timing this time. Poor old QF5/6 have been moved to 1505 and then back to 1310 and now back to 1510. As well as the constant aircraft changes, it has become QF's most schizophrenic route since it stopped going through to FRA!

Luckily the connecting flights booked into B fare bucket and could easily be moved backwards and forwards without hassle by the Platinum service centre.
Not sure what has brought about the re-timing this time. Poor old QF5/6 have been moved to 1505 and then back to 1310 and now back to 1510. As well as the constant aircraft changes, it has become QF's most schizophrenic route since it stopped going through to FRA!