Considering I'm reasonably positive 2016 will be the last year Nintendo cares about the 3DS system family even a little, you can guarantee no exclusive N3DS content is coming. Ever. It just doesn't make sense to bother, which is why I was personally a little confused when people expected it to begin with. For anyone thinking the 3DS might live for 2+ more years (nobody in this thread yet, just in general), look at the lifespan of the far more successful DS family, then tell me they have any reason to let the 3DS family, currently the worst selling collection of Nintendo handhelds ever, live on past 2016.
The system has a little life in itself yet, but I have a feeling we won't be seeing much in the latter half of 2016 unless the DQ games get localized really slowly. Of all the potential coming releases, the odds of any being N3DS exclusive, truly exclusive, are non-existent.
