Wouldn't know, I don't have a 3DS, yet. Trying like hell to grab one ASAP.
I have doubts they'll turn back to traditional sprite so easily, and if, by short chance they did split future versions from 3d and traditional (cobalt in 3d, crimson in traditional for example) it'd definitely give more incentive to buy both games.
"It's not so much as preventing insanity... As much as it is taking advantage of Insanity..."
[This is where I'd put one of my drawings I worked hard on in my sig, but since I'd have to spring five bucks to do so, I'll just put me photobucket link here.]