I am fairly sure it will use the same Voltec system as 2013 Volt. They need to recoup their investment and I doubt volume would justify much changes. It Will probably be lighter so should be faster to 60.
Comment from Volt Forum 'The same patch could be done to the Volt, but never will be, the numbers the Volt runs on now is just because GM was very conservative on the battery maximum current draws. With the ELR, slugging around another 400 pounds and higher price tag made them use what has always been in the design from day 1'