Nikon going into cinema will never happen, Canon, Sony, Panasonic, JVC all have professional broadcast divisions and can even be considered pioneers in digital video, Nikon don't have any of that. Having a cinema line is more than just releasing bodies and lenses, it require decades of experience in software, hardware, and logistical support. If you look at the financial results between Canon and Nikon, Canon absolutely dwarfs Nikon in terms of net income, Nikon does not have the expertise or resources to commit into a new line of cinema products, hence why they release products based on 4 year old tech.