This is the 3DS' peak. Enjoy it.
They've thrown every type of Mario (and Luigi) at it plus Monster Hunter 3G + 4 and Pokemon X/Y and Animal Crossing and even tried to Nintendogs/cats + Brain Training stuff and had some OK third parties take a shot with Kingdom Hearts and Resident Evil. Zelda will be on it by year end too.
On top of three hardware versions (OG, XL, 2DS) and more special editions/color variants than you can throw a stick at.
Things like Kirby and Diddy Kong Racing I can see popping up on the 3DS, but these aren't going to radically impact hardware sales. Dragon Quest XI I think is coming to 3DS, but probably to mobile also. That should cause a boost in Japan, but not really anywhere else