Well worth the wait!!
I was one of the first round of backers of the TK02, and I received my TK02 back in January. Since then, it has been the subject of constant use and has brewed some 800 shots of espresso thus far.
It brews drinks as well (arguably better) than the Jura we have at work. The over the air firmware update and app have been great so far as well. I spend a fair bit of time on the road so being able to turn off the automatic wake/sleep modes over wifi is great, as is the ability to tailor drinks to my liking.
Menus are clean and intuitive, cleaning is simple, and adjusting the texture of the milk with the dial works beautifully.
The only gripe so far is that the hopper doesn't have a warning for when the beans are running low, but the TK team told me there is a future update in the works to enable this.
Overall, I love my TK02 and would recommend it to anyone in the market for a super automatic espresso machine.