I'm currently using BlueNote Classic. What is the difference between it and BlueNote Lights?
The biggest change that was made when BlueNote Lights was introduced in 2013 was to get away from the idea that all actions had to be posted to a Location. BlueNote Classic requires you to post a BlueNote inside a Location. With BlueNote Lights, the Light often already contains all the information needed and is in a fixed position. Once it is active, it changes color to let users know that an action is needed.
The video below shows a few workflow comparisons between BlueNote Classic and Lights. We've actually programmed the Lights to emulate the Classic program by assigning them as Locations in this instance, but remember that they are very much free-form in that you can use a Light for pretty much any command in a single click.