They are really far along with that one. Watch the detailed video on that, that i posted in the Behringer Solina thread.
My opinion :
The thing that’s cool about their Solina is not only how obsessed they have been with recreating the sound, but the effort they took to duplicate the unusual technology of that synth. That can’t be the least expensive approach to take, but it is certainly the most authentic.
That video is good too, to get a little view of one of the engineers Behringer employs.
Quite surprised that the Solina has not been released already.