Quite much so in last months, but the project is still alive. It's just "too much work, not enough time" thing.
BTW, we are evaluating EtherCAT interface. If it seems reasonable in work amount, then we probably replace USB with EtherCAT as it's much more supported in industry (i.e. EtherCAT CNC software already available). It takes more research on topic to say any decision. The solution could be either a) direct EtherCAT support on each drive or b) USB7AX like device but EtherCAT instead of USB.
Thanx for the update.
/Paul
Thanks for clarification. About EtherCAT, I think you are talking about this:
http://www.ethercat.org/en/ethercat.html
And, if I understand correctly, with this EtherCAT, I can build a 6 axis CNC machine and control them from PC using an ethernet port instead of USB?
One more question. What software can control this EtherCAT thing? Mach3, Emc2, etc?