Yes mingguan - got back to Singapore 2 weeks ago!
The NP series are very new. They do not have the same graded keys as the P series. In fact, I find the P series graded keys already too light for my liking (ie lower end P series) when I was playing with them in Plaza. The NP series will be even lighter than that. They call it "graded soft touch". I think it will be similar to the Roland ep series of digital pianos. This way, they can reduce the weight. I also suspect they will use "plasticky" material for the body to keep it light.
Gainax, I didn't see it in Plaza. I doubt it has arrived yet. Perhaps you want to consider the P series?