Version 14.2.1 solidified the functionality of the Essential Graphics Panel. This feature revolutionized the workflow between motion designers and video editors using Adobe Premiere Pro.
Artists could package complex compositions into single files with customizable sliders, text fields, and color pickers.
While rare, some users who purchased a permanent license for CS6 were offered a subscription-free version of CC 2017. Version 14.2.1 is the last build that can be "patched" for offline use without phone-home licensing for some educational setups (though Adobe no longer supports this).