Nintendo Quarter results are here! 7.08M 3DS and 3.03M Wii U shipped! Wii U 9.2M total shipped! 5.7 amiibos shipped!$250 million net income! 3DS projections lowered!

[DM235]

Interestingly enough, from the above article, one analyst is expecting Nintendo to release a new handheld model next year, with information coming out this year.

Sort of makes sense. The 3DS was released about 1.5 years after the DSi XL (the last iteration of the DSi). The "new" 3DS XL was released in 2014, so 2016 is not out of the question for a brand new model. I don't expect any more iterations of the current 3DS.