Patent No. 8,086,604 : Apple is spinning this as the "Siri patent", even though it was applied for in 2000, long before anyone had even thought of an iphone and an even longer time before Apple bought the Siri app. Look at the images in the patent, and you'll see it actually describes the Spotlight feature of OSX.
I was using the edition and decided it was time to upgrade to the latest version. What was once a 3-step process, is now only one. Some items though are taking time to get used to. For instance, I used to have a command down below for lengths and shape options, now its hovering over the actual shape. For any Architect, Inventor, or hobbyist, this is the program to go for. There is also a sweet rebate right now for like off the price.