When the NX10 was first out, i looked at it at the same time i was investigating the Pen and Panasonic mirrorless stuff. I disliked the Olympus and Panny, and liked the Samsung. That they also had a (good) 30/f2 pancake was icing. But, i waited, due to rumors of other impending systems. I'm still waiting.
Last month, i went to B&H, the SUPERstore, to check out the current situation. Saw the Sonys. Saw the Fujis. Still don't like the Olympus (even the OM-D). Still don't like the Panasonics.... Went, specifically to see the NX210... and could NOT find it. It wasn't on display in the central kiosk area. I was told to look at one of the counters. Didn't see it there. The rep behind that counter told me to go look in the 'pro' section behind the counter. Didn't see it there, either. I ended up just leaving. It might be a great camera, but when even B&H makes it impossible to see, it doesn't seem the system is being supported, retail-wise, well enough to survive in this market.
It's a shame, as the new bodies look sorta like the NEX, but with the advantage of that great small lens....