First iteration of a product will always take longer to develop. But after that, it's just a matter of small redesigns, new components and features etc.
Competitors are adding new features every month, so Apple will have to make a new version every year to keep being in the game.
So I expect a new version in 2016. Maybe not a redesign, but new sensors and maybe better battery life due to newer tech.
Competitors are adding new features every month, so Apple will have to make a new version every year to keep being in the game.
So I expect a new version in 2016. Maybe not a redesign, but new sensors and maybe better battery life due to newer tech.