One possible time zone between Mac and iPad it has already been the subject of much discussion in the Applemanacos. The company's own executives denied this information in some interviews, saying that each product has a way of interacting and that when you try to do everything, you end up doing nothing well.
But now, with the supposed intention of Apple to make applications created for iOS also run on macOS (project internally called "Marzipan"), are we not moving towards something like this?
In a new interview for the newspaper Sydney Morning Herald, awarded right after the educational event last month (in which the company presented on the new 9.7-inch iPad), Tim Cook denied that the company has the intention to mix the products (consequently, the systems):
We do not believe in reducing one (system) to increase the other. Both (Mac and iPad) are incredible. One of the reasons why they are both incredible is that we encourage them to do what they do well. And if you start to merge the two, you start making concessions and commitments.
Perhaps the company would be more efficient at the end of the day. But that's not what it is about. You know how to give people things that they can use to help them change the world, or express their passion, or express their creativity. So, this fusion thing that some people are obsessed with, I don't think that's what the users want.
That is, even though the project Marzipan exists within Apple and is even presented during the Worldwide Developers Conference (WWDC) 2018, the idea at least as I imagine everything will continue as it is for the end user. The big change would be for developers, who would dedicate themselves to only one project (which would run natively, according to the interfaces and interactions of each platform).
We will see what comes next