The “mini-NX1” is coming in February (NX400)
I got this rumor from a very good Samsung source:
Not sure they’ll succeed in doing this, but at nx team they are doing their best to get the nx400 ready for the cp+ show in February.
Confirmed the same sensor and AF system as nx1. No weather sealing, smaller buffer (but much bigger than older models).
Would certainly be nice if it becomes true!