Coming from a Verge interview with Reggie Fils-Aime...
“We believe this is a key addition to the line. A very important platform. It’s something that we’re going to continue to drive this year [and] next year.
We’re going to continue to have great games leveraging all of our great franchises. Just like Nintendo Switch is going to have its own development pace and its own set of experiences. Clearly there’s a processing power difference between the different systems. You couldn’t have an experience like Breath of the Wild on the 3DS family. But on the other hand, with the two screens, with the 3D capability, there are experiences that we will create for the 3DS family that you can’t have on Nintendo Switch. By continuing to do that, we’ll drive the install base of both systems, and continue to drive the overall Nintendo business. That’s our thinking.”
When asked whether thsi would be the last redesign of the 3DS, Reggie couldn't say.
“Our focus is on making sure this launch goes well and what the future holds, we’ll see.”