Whilst it is possible A380s will use PER it isn't very likely.
A few Reasons
A380s are going to be of most use to their owners at slot restricted airports, shifting more people without the need for getting extra slots. PER-SIN is not slot restricted so pax appreciate the frequency of 3 daily services. One A380 a day is nowhere near as attractive. SQ will use its A380s into SYD because it fills its 744 services into there but can't add anymore services due to lack of slots. The A380 is the only way to add capacity to this route outside of departure times which are useless for onward services.
QF will continue to use Asian ports such as SIN, BKK, or HKG as their European stopover. Apart from the huge yields earned by QF on picking up Asian pax then taking them onto Europe, QF also can use Asian ports such as SIN as hubs. 744s (A380s) from MEL and SYD and 763s (A330s) from BNE and PER can all arrive into SIN at similar times and pax can be transferred onto services going to London, Rome, Paris and Frankfurt. A non-stop PER-LHR does not offer this flexibility.
SQ will not be leasing their A380s to AN, at least not in the short term and even then probably for Pacific services only. They need them themselves on slot restricted routes such as SIN-LHR. SQ want to encourage use of their SIN hub and the Singapore government wants them to as well for economic reasons. They have a very effective hubbing arrangement established already whereby the operate as a pseudo Australian airline with multiple daily flights out of all Australian mainland and NZ ports which dovetail with onward SQ services throughout Europe and Asia. The SQ investment in AN/NZ gives them access and ownership of quality airlines in a region perfectly placed to feed services onto SQ services. It also offers them access to routes they cannot fly in their own right such as SYD-LAX where we may see an AN A380 one day (more probably 744s).