Because the code has been licensed under the Eclipse public license rather than the harder-core GPL, device manufacturers will be able to continue to tack on custom features and hardware support without open-sourcing it, which should make them less gun-shy about throwing weight behind the platform -- and considering how badly these guys need to get back into the spotlight, that's a good thing.
The front-wheel drive LEAF again uses a dedicated EV platform with batteries housed in the floor for optimum vehicle packaging and weight distribution.