Hi Syntaxing I'm the owner of myrobotmower.com Although not a hands on, I wrote this article due to the significance of the announcement. As a robot lawnmower enthusiast for 20 years, the imminent arrival of robot mowers without perimeter wire is a paradigm shift in the industry. I'm actively involved with a number of companies developing competing products. I have hands on experience with most of the current robot mowers on the market, and robot mowers like the irobot terra are going to make a big impact when they launch. I wish I had more info for the article that I can publicly share. Best wishes Andrew