I ended up cancelling my order months ago. Has a whiff of vapour ware about it. I believe they will ship eventually, but I think they are probably having more issues with TB3 being so new than they expected. Pretty common when Apple release a new interface from my experience sadly.
Edit: This is why I generally don’t back Kickstarted things for ‘new’ specs etc. I did get sucked in and back a replacement USB-C charger kickstarter that still can’t shipped either…
I have been generally quite disappointed with USB-C in real world use. Very unreliable with regard to what outputs are supported. Apple’s implementation or GPU drivers for Display Port over USB-C are definitely not ‘standard’ as I have lots of issues with 3rd party adapters/docks. Feels very “rev a” still sadly.