Answer:
Of course new generation wind turbine has to face wind.The concept of wind turbine is this that wind has kinetic energy, and this energy is converted by WTG by rotary blade into mechanical energy through gear box then again into electrical energy through generator. Here mainly wind is the main criteria, which rotates blade in variable speed depends upon wind density. More density and wind speeed more power will be generated.
Besides this there are many versions of wind turbine, Upwind means new generation wind turbine normally we observed, In Down wind turbines turbines has no relation with wind perpendicular to wind.
I think you must have got the answer.