I believe the prices will steadily rise as far as the luxury or high end real estate goes, the prices are already on the rise. In Dubai Marina alone there has been a significant increase in the prices and rents of all units.
Secondly the efforts exerted by the government are also steering things in the right direction for the market. I concur with kendubai, that the mortgage cap, if and when implemented, would go a long way in pushing credit buyers out of the market which will be good for rents.