I'm using AD since summer 2014 and I think updates are very slow. 3 years, I can't believe it ! I was thinking 2 years but no, it's 3 years. Between first beta and now, the significant updates for me are symbols, text on path, corner tool and pivot point.
I must explain my job : I'm working for horology and I'm drawing dials, cases, hands, straps, all we need for a watch. I already love AD because it was so easy to change colors. A very big time saving compared to Illustrator. And no