^^
There have been rumours that it was for a TVXQ/THSK (?) photoshoot, since the other rumour rised that Yunho is in Australia too. But there is no proof yet about Yunho being in Australia.
Another rumour is that Junsu is there for a Mozart photobook, since Jaejoong and Yoochun aren't included in the shoots. But if it for a photobook, then why aren't the other Mozart actors there?
Really confusing, so we have to wait for more information
And for the Break Out PV
PS: almost time for a new thread
PS2: I have my own theories about them being there
Now they can call to Yunho from Australia with the phone in their hotel and SM might think it's Changmin, so they can talk to each other again? xD