Of course attached housing is going to be more popular.  Land is expensive so if you get more housing onto the same land the break even point for developers is lower.  Since more people/families can afford and need lower prices to buy it's just a matter of developers providing the supply as the price point that people demand.  Seeing how higher demand is more efficient for infrastructure this could be a win for everyone seeking affordable housing.

It'll be interesting if any of the large condo projects that have been proposed can get financing and get off the ground.  I think there is a huge backlog of demand for "starter condos" that would sell fast.  It just depends on if the developers can make those projects happen at a price that is profitable but still low enough that demand stays high.