Sounds like its going to be more like a Lotus, small agile, car... Not much meat in the article though...
Traslation of that page:
Although the development team of the previous NSX have met and brokenup numerius times, It seems that this time they have official go to start to a new NSX project.
The Theme of this new NSX project is: "Compactification".
Although there is a lot of hope of a new multi cylinder engine, the present thinking is to continue the V6 design, but also to start fresh and redesign a whole new engine.
The Engine is said to be a 3600 cc engine.
Another topic that is being discussed along with down sizing the body is the horizontal mounting of the engine.