The 2016 Cadillac ELR will get a larger 17.1 kWh battery pack in model year 2016, just like the Chevy Volt did.
HybridCars says:
"The timing for the upgrade will be in a few months when the ELR sees its change-over from the 2014 model year specification to 2015, according to an industry course with knowledge of the matter."
That could mean an electric range increase from 37 miles to around 39 miles because of the extra 0.6 kWh added to the battery pack.
Full article on HybridCars:
http://www.hybridcars.com/2015-cadillac ... ric-range/Official Cadillac Offers, although dealerships are offering discounts of up to $12,500 in rebates to buyers of the ELR. Leases can also be had for $499 straight from the dealerships, rather than the $699 per month offered on Cadillac's website. Cadillac also throws in a Bosch level two home charging unit, and pays for up to $3,000 in installation costs.