Today's smartphones are tiny computers with a nice OS and UI, apps and Internet access to buy/load new apps, share information and do whatever you want to accomplish – play a game, solve a problem, process data, navigate, shoot and cut a video, write a letter, do your online banking – you name it, your phone can do it.
The camera of the future will just be like that. It'll have a nice OS and UI, apps and an app store, and it'll connect to the Internet. You will be able to enhance your camera with apps, to configure and reconfigure it as you please. Third party developers will add additional functions though apps, you'll be able to buy them in "Nikon Store". Or probably rather a "Samsung Store", as legacy manufactures are falling behind and might end up like Kodak, Contax etc. did when digital cameras replaced traditional film. They might remain stuck in their old paradigm of "what makes a camera", of "how a camera has to look like" and "how to sell and market a camera".
Who knows, cameras of the future may be give-away items like many cell phones are today, as the money will made by online purchases, with apps, service subscriptions, in-app purchases and so on. This "Samsung Store" might be part of a "Samsung World", a set of tools to process, share, print and organize your photos (and videos, of course) directly out of your camera, phone, tablett, laptop and PC. It won't matter, because everything will be connected.
Obviously, there will be an overlapping area between cameras and smartphones, and this area will become bigger and bigger. In a few years, the cheap compact camera market will be pretty dead, as every smartphone will do a perfect job of what a cheap compact is capable today. That's why manufacturers are now scrambling to get into the ILC market, because smartphones don't have interchangables lenses, and that's most likely to remain the case for several more years. They will get some zoom capability, though. Hence Fuji's entry into the premium and super-premium compact market (X10, X100) and their expected entry into the ILC market next year. Nikon is doing it, too, and their sensor is small, obviously targeting the lifestyle crowd of high-end smartphone users, not old-fashioned photographers.