But the most important part of the hardware - the CPU/GPU (and probably the memory, storage and bus technology) - will be upgraded. That is the gain.
The size and shape of an aluminium box don't have much to do with it apart from mostly aesthetic considerations.
But it’s not about the box, it’s about all the features that come with the box. There’s a lot of stuff that could see some improvement on the Mac, like the TouchBar itself, another try at the low travel keyboard that actually works, the promised MiniLED screen, FaceID, a better webcam, ... and in general, something that shows Apples unique vision in the laptop segment, some form of innovation.
Those are the most important things, the way we use our computers, because in the end this is where we lose most of our time: by communicating with them inefficiently. The computing power can be a problem, but it’s not of moment-to-moment nature.
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