There are some skeptics around the interwebs who say it'll convert like the pathfinder did - to become a small unibody crossover. I don't buy that for several reasons:
1) Nissan already makes a small and midsize crossover, both of which are very successful (the Rogue and the Murano).
2) the article specifically states that the info from inside Nissan is that it'll be a body-on-frame design, and will likely share the same platform/frame as the US version of the new Frontier. So basically, just like the previous version, it'll just be an SUV version of the Frontier
3) The article specifically says Nissan has been watching people go after Jeep like the dickens ever since Nissan left the off-road segment by discontinuing the Xterra. That makes you hope they'd at least continue to offer an off-road type trim level, equipped with locker(s), lower gear ratio, etc.
I'm not quite sure they'd go as far as something as capable as a rubicon, but something at least as capable as the Pro4X version would be nice to see continued.
If it sells well enough, there will be plenty of aftermarket support.