Way back in July 2015 we had the first NX 'game announcement', when Square Enix revealed that Dragon Quest XI would come to both the 3DS and the next-gen system, albeit in very different forms. Square Enix then backtracked, possibly because Nintendo may not have been delighted to see a platform a long way from its reveal being mentioned by other publishers.
That same set of reveals also confirmed that Dragon Quest X would come to the NX, and now that has been mentioned again, well over a year after the official announcement. Dragon Quest X producer Yosuke Saito said the following to Famitsu.
I think there will be an influx of new players that peaks with the launch of the PS4 and NX editions. Up until then, rather than the incoming new players, we are doing our best for the people who are playing already.
Dragon Quest X, an MMORPG, has so far had three major content updates, with a fourth version currently in the works. Sensible money is on Version 4 being the focal point for a release on PS4 and NX.
What this doesn't do, though, is re-confirm Dragon Quest XI for NX, while X is still a Japan-only title.
In light of the upcoming 3DS releases in the West, though, perhaps there's hope that Square Enix will start to push this series in the West once again - time will tell.