The forks still appear to be damper rod, in design, so the front end won't likely be a significant improvement. They could only do better than the stock shock, that came on my ER (same shock as the Ninja 650R). There doesn't appear to be any additional adjustability.
Kawasaki Canada puts the curb weight difference down at about 12 pounds/5Kg. Any additional weight could be because of the larger fuel capacity, in a total wet weight.
They're also releasing a new ER-6n, based on the new Ninja 650R. Nice to see, given that they didn't even bother to bring it in last year.
Are you sure about the weight comparison? The 2012 holds only 0.5 litres of extra fuel. That can't be more the a few pounds....