Not any foreigners. If my info is correct, they have, or are going to, institute an excise tax on foreign purchasers of some 15%.
Also, there was some talk in the summer of "imputed rent" taxes. That is where an owner of a property is assumed to benefit from the rental income it would cost to rent it--so it is added to his income and taxed. I don't believe that has been implemented.
The Dims almost go that one passed here couple years ago. They backed off at the last minute.
Dubai is really built on shifting sand. Once the oil revenues and property bubble fades...