If Microsoft does make a Surface 4, the device could instead carry a Core M chip, which is already used in a model of the Surface Pro 4.
In the long run, Microsoft has to figure out what to do with the entire Surface lineup. The Xbox is the soup-to-nuts money maker, the HoloLens is the game changer, but there are questions on the motivation behind Surface devices, Kay said.
"What's their purpose? Are they making money? Are they making prototypes?"
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