AED is Schneider's new LayoutFAST upgrade for Revit. It can do short circuit and arc flash calculations, but also riser/oneline diagrams. It seems to be more than an add-in, as Revit has actually partnered with BIM Electric and Schneider to make this program.
This program still seems to be in its infancy, but I'd be interested to hear if anyone has any experience (good or bad) using the add-in. Cheers.
Reference:
https://bim-electric.com/https://www.autodesk.com/partners/aec-p ... r-electric