Nikon has mentioned on several occasions that they will surprise the market and will do things differently with their mirrorless camera. They also said that their mirrorless camera will not be targeted at professionals (although several websites reported the contrary) and will have enhanced video features.
The new Nikon mirrorless camera was described to me as “having more enthusiast than pro features” and “having few very innovative features”. Nikon is also working on a special flash unit for their mirrorless camera which will be probably announced in the future.