Seeing the gauge layout from the Facebook posting, and knowing its called Project Rushmore...I bet HD is calling it that because the gauges are all side by side, just like Rushmore's faces.
Based on the CARB filings, I don't expect anything new performance-wise, but more about gadgets. A new fancy radio, LEDs stock in more models, etc. The inner fairing and it's supports will be the only changes. Then, we'll see a rush of owners with the older style replacing it with the new inner, upgrading radios, etc....basically, retrofitting the new to old.
And then, MOCO will sell it as an upgrade kit, in primer only, at an inflated cost to us all! Just like saddlebag speaker lids, speakers in lowers, etc!