Why hasn't Microsoft made a 'Surface Go X'?

[Windows Central]

The Surface Go design is perfect for ARM. Why won't Microsoft embrace it?
When thinking about existing devices that should have an ARM processor configuration available, the Surface Go immediately comes to mind. With its extremely compact dimensions and light weight, the Surface Go is a perfect fit for ARM chips that significantly cut down on power consumption and substantially boost battery life while still offering competent performance for general web browsing and productivity work.

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