More seriously, does anyone find it odd that the PM of Australia is making this announcement? For example, if the US Navy found something, I would not expect President Obama to announce it.
Westminster parliamentary system.
One assumes the real press conference was delayed so he could do the grandstanding.
That said, there should have been nothing said at this stage anyway until some sort of real conformation was performed.
I guess it's all about entertaining the masses who demand their ongoing live entertainment fix.
Details of the satellite images and retasking of search aircraft would surely have leaked and the Australian government would have been rightly criticised for withholding that information had it not been announced.