Seems that the boys will perform on the V Festival in Sydney (Australia) next year. The following info is taken from the V Festival page (http://www.virtualfestivals.com):
Festival is to be exported to Australia next Spring. Following months of speculation, two one-day festivals will take place in Sydney and the Gold Coast with several bands already confirmed to play…
Pixies, Gnarls Barkley, The Rapture, Groove Armada, Soulwax and Pet Shop Boys are the first acts confirmed to perform at the two festivals. Both days are expected to attract tens of thousands of music fans.
The two dates are at Sydney’s Centennial Park on March 31st and at Gold Coast Avica Resort on April 1st.
Now we have to wait till the PSB management will confirm this on their website!