Any news on a date when a v2 Dually will be available?
Scott
My guess would be after the Taz 6 is out since the 6 will have the 12mm rods on X that will probably be required for the weight of the metal plates. But thats just a guess.
12mm makes a lot of sense. Maybe my best bet is to go with your x rails and make my own dually.
Thanks,
Scott
TA DA! It is in the store! 
does cura support dual fan control now?
Have they added fans to the extruders?
Do you need to add pins in the taz 4 housing connections?
The last dual hotend was a mess. WAY to heavy and almost impossible to configure and maintain. (once setting the second extruder height it NEVER stayed put.) No fans and temperature issues. For $500 you could have something much better. https://forum.lulzbot.com/t/first-dual-extrusion-print-from-a-cyclops-hot-end-and-bondtech-qr-extruders/2588/1