Looks like Nintendo is finally going to move away from creating the Nintendo DS. The current fiscal year, which ends March 2014, forecasts total sales of the Nintendo DS at 0. Nintendo hasn't officially said that they're stopping production of the system, but they did offer up this statement. What they say makes it clear that the DS is winding down.
Nintendo will continue to sell Nintendo DS Hardware but is not revealing a unit sales forecast at this time.
With that said, the Nintendo DS family of portables managed to ship 153.87 million units around the world.