From Neogaf http://www.neogaf.com/forum/showpost.php?p=202786063&postcount=398

Silicon Studio had their 2015 fiscal year earning presentation listed that (I think) NX development presents a growth opportunity for them. Mistwalker and Silicon Studio are working on something together (that news came out in late February) and I've got no idea if this is related. (It could be for anything.) This presentation was given on January 26, but again, I haven't seen anything about it so ignore if old!

Here is the actual slide:

Best thing about threads like this now ... we don't have to fucking argue whether or not this means an NX launch is imminent/Wii U's demise is imminent.

Bravely Default NX? New IP?

It would be really cool to get a JRPG Bravely game with an open world on a home console. 

Any reason why NX is next to PSVR with a slash? Or am I reading too deep into it? Is NX VR capable?

I don't care what series it is as long as the ps4/nx get a good console rpg

Not sure but maybe its because they aren't released yet.

Just Silicon Studio spilling nintendos secret plans for their console :p

Nintendo VR :)

Please be on ps4 as whale X_X.

I think it would be more likely they group them together as they are both unreleased/upcoming platforms.