That roadmap says they will start volume production of the new "200 mile" cells intended for these automotive companies in 2016 when GM will need them for its 2017 model year 200 mile car. These cells are designed specifically for automotive use and GM almost certainly has engineering samples of them today and has carefully tested them for suitability.Take a look at their roadmap:
http://insideevs.com/lg-chem-supply-200-mile-battery-2016/
LG has indicated they will start production of their next gen cells around 2017, that doesn't mean they will be ready for a pack yet, or a car.
The reason the Silicon Valley battery startup Envia failed was because GM, one of their investors, demanded engineering samples to test and then discovered the cells didn't work as advertised. LG Chem has also had an excellent durability and QA record with their existing Volt cells.