This isn't the hardware I was expecting to be reviewing. In the run-up to Microsoft's New York City event earlier this week, the working assumption was that the company would be unveiling an 8-inch Surface mini. But just days before the event, the mini's launch was put on hold. Instead, we got the Surface Pro 3. Since the first iteration of the Surface range, the Surface RT, was released back in 2012, the biggest challenge has been categorization.