Pretty much a standard cycle for units, rents and prices drop as supply comes on line. After that a bunch of marginal developments will cease so supply slows add in a few years of population growth and then you get 5-10 years of price growth condensed into 2 years due to a supply shortage and so the ball rolls on.
Houses different story prices will remain solid in most areas may get some pull back in fringe/greenfield suburbs where everything got a little too speculative especially if some proposed/planned public transport doesn't come to fruition.