You are correct that the FHB has increased although 2% less than forecast. Investment loans fell 2.8%.
So it is safe to say that the FHBs are the market ATM while this boost is in place for another 3 months. After all the FHBs have brought their purchase decision forward where is the demand going to come from?
As for rents, they fell by around three quarters of a per cent in March. So they have topped out to by the looks as you would expect with rising unemployment and reduced capacity to pay.