This pops up every few weeks / months and not once have I seen anything tangible from them. They refuse to offer a 'try-before-you-buy' demo and there's no way to actually see the tech work. You have to pay for a year's subscription, with no release date for the actual product other than 'late spring', with e-commerce coming 'late 2015'.
I would have a lot more confidence in handing over my money if they'd release something that people could actually look at and determine whether it's worth the price. The pre-order price is not really that expensive, but they have over 20k pre-paid subscribers waiting for anything with no visibility of actual progress other than slick marketing.
Maybe I'm just a cynic, but this just feels like it's going to be a disappointment.