The 2012 Enertia which is in Europe now and arrives in the US shortly has a number of changes that you will also see on the Enertia Plus. Low speed maneuverability is much improved.
EU and UK homologation and Bold New Colors !
New motor controller allowing for greater configuration options and more robust communications with the Vehicle Control Unit. This change is mostly transparent to you the customer, it may provide room for growth into "sport" or "economy" driving maps in the future.
New forged triple clamp with much improved steering lock and slightly modified geometry and ergonomics. Reduced trail plus the increased lock makes for a dramatic improvement to low-speed maneuverability, without sacrificing any stability at speed. The handle bar position is roughly 1" higher and 1" back towards the rider which was judged to be more comfortable for a wide variety of rider shapes and sizes.
New cast aluminum headlamp brackets clean up the aesthetic of the front end and make servicing to any of the parts in that assembly much easier (i.e. more room for tools). They also reposition the dash closer to the triple clamp and change the angle slightly. The new brackets were also designed to accept accessories like the windscreen with a simple bolt-on kit.
New upgraded motor. The power level is the same, but the motor features greater efficiency which reduces the heat generated, allowing more performance to be pulled out of the bike.
New auto-start module integration - The Enertia now starts with the key switch and does not require the button press. The start button has been replaced with a tasteful stamped aluminum Brammo bull head badge.
The Enertia also charges when plugged in to AC power, no special key position or steps required.
New mirrors and new handlebar grips.