Well for the record, I always expected them to release something (at the very least they need a compliance car to replace the Spark EV), but I don't expect that car to bear much resemblance to the concept (even though it might share the same name).
And I don't expect it to come before 2017 (Model 3 planned launch), as if they follow the Volt timeline it'll be 2019 when it's released (assuming it's not a conversion like the Spark EV). This announcement notably has no production date promise, so the argument about if it'll come out before the Model 3 is still ongoing (from another thread, my guess on order is Leaf 2, Model 3, Bolt). And the release says "GM-estimated 200 miles of range", so I think people expecting 200 miles EPA range will be disappointed.