Has there been any update since November where they said they were aiming to have the kits in hand before the year was out? I’ve tried reaching out to them a couple times over the last few months but have not received any response. I have had issues receiving emails from them in the past so I wanted to make sure I haven't missed anything. 
 

Maybe its been difficult to source the parts? I bought some wheels & knuckle couplers from them right before the holidays and there was no issue.

From what I recall - and I don't have one on order - the biggest issue was the PFx Bricks, due to the global semiconductor/chip shortage. Now that FX Bricks are now restocking them, there may be hope they'll start shipping soon.