Doepfer A-1?? Thru-Zero Quadrature VCO/VCF (QVCO)

What is it with people rating stuff that hasn't been released nor definitely defined yet. According to Doepfer's website, the filter part will probably not be a part of it either, and the characteristics switch might be gone too as they'll be available simultaneously instead.

sorry, I own the prototype

so, it can do thru zero but no v/oct tracking then? or is only the fm switchable between the two and you get 1v/oct in linear mode as well?

Through-zero with v/oct would make no sense.  You would need an infinite negative control voltage.