Not sure six months will be enough, sure we have about a handful of titles by then but is the continuous flow there like the DS yet? Rpgs, platformers, still need see alot more genre coverage.
Those games all looked like nostalgia bait to me. I'm not sure many kids and casual gamers will be all that willing to jump from DS to 3DS on those titles alone. I think it's going to take a new Pokemon game for the kids and whatever the next Brain age/Nintendog fad is going to be for casuals.