What makes you so sure they won't redo all the main heisei riders? This:
http://www.jefusion.com/2013/07/sh-figuarts-kamen-rider-kabuto-ver-2-revealed.html
suggests otherwise.
The question that bothers me though is, they announced kabuto renewal, then blade got an announcement then hibiki, but why are the only ones that are part of this line kabuto and hibiki? Heck none of the other versions are part of this line. Eg black and Rx nor are Gaim etc part of it. So what in the world is this line supposed to represent? Just more accurate molding? I have to say blade is pretty accurate and Gaim and friends are looking accurate as well.
The thing is that the Agito & Kuuga figuarts actually are built ACCURATELY enough to where they DON'T need the resculpts