We are used to see Sony release new cameras at a tremendous pace. Each and every year we have a new camera, The A7II has been released just a year after the A7, same thing with the A7r/ A7rII and A7s/A7sII. The all new A7rII is literally a flagship for Sony as it encompasses all the new technologies Sony has been working on the past few years, especially with the 5 axis stabilization combined with the world premier full frame back-lit sensor. That being said, we’re not going to detail all the great features housed by the A7rII, the A7sII or the entry level A7II. Instead, I’d like to imagine what the A7III would be like. Sony always introduces the A7 then A7r and quickly after the A7s series, hense the next body in that series would be the A7III.
However, it is important to note that the A7II was released in January 2015, a little bit more than a year ago which means that Sony decided to change and slow down its pace in the race to the best mirrorless camera. Is it a good or bad thing, I will let you be the judge of their strategy. But in my opinion, this is a very good thing. First, it will settle down the image of the cameras and they will lose less value with time, making them appear more credible and valuable against CaNikon competitors, and second, it shows that Sony is focusing more on developing the E-mount lenses. Knowing this, we can assume that this system will arrive to a certain maturity by the end of 2016 ( especially as Zeiss declared to iLHP being ready to release 2-3 E-mount lenses in 2016 and 2-3 others in 2017, 5 in total). Considering the success of this system, third party manufacturers will also get more involved and start to produce lenses as well. Sigma, for instance, has been stressed a lot in the past few months by A7 consumers and prosumers to produce their ART series for the E-mount.
But this new strategy will not prevent Sony from innovating again. They literately attacked Canon and Nikon by creating a new market and taking a significant share of the whole DSLR/mirrorless market. Without a doubt, Canon and Nikon will react within a year or two. Sony knows this and is obviously working on the A7II successor that we might be expecting for January 2017 if they want to stay ahead of the game.