The DS might not work with the Revolution's sensors, but both the DS and the Revolution have WiFi capabilities. And after the recent bout of linking the handheld to the console, which really is great for games like LoZ: Four Swords and FF: Crystal Chronicles, I doubt that they would drop the idea with the Revolution.
The only reason why I would see that they wouldn't is that the Revolution's controller seems so versatile, what with all of the periphials that they can create and incorporate so easily, they might not need to use the DS. But then the only issue is people buying the periphial when they already have the DS. But maybe they don't, so it doesn't matter.