Later CTs got additional Sport modes and a choice between three torque control settings (plus off). Models from 2016
got a redesigned front fairing with different windshield mountings and an adjustable shield mechanism. The seat got a
minor redesign. Self-cancelling indicators also appeared, along with a fairing-mounted 12v socket.
My 2013 has none of these; just one Sport setting, torque is either on or off and the windshield is fixed (though there's
the option to fit Givi Airflow screens on these older bikes). The indicators are standard. It has the map/compass fairing
graphic as pictured, which as you say makes it a Special Edition. Er, hurrah, I think.

I can't think of any other obvious differences, but leaner fuelling must have been introduced to make the bike compliant
with stricter emissions regulations. I'm sure someone will pick up on something I missed.