It is at 2.0.138 now, since quite a while .
Though it will only work when you installed it at the right place (depending a bit on your OS).
I once assembled some info from Adam into a notebook : http://www.gluonvision.com/downloads/installWWB.nb
I wished there would be more development ...
Actually, I think Workbench should be made opensource. If at all possible.
Then people could just update plugins and try to get things to work with Eclipse 4.2 (now only
the 3.8.1 version works).