Microsoft’s current plans for the Surface line are currently up in the air. The company has confirmed nothing. Certainly the Surface Pro 4 and Surface Book are unlikely to be refreshed this year. However, a Chinese outlet has offered the clearest indication that the company is developing new products.
Economic Daily News (EDN) says that Chinese manufacturer Pegatron Technology has been tasked with building new Surface devices. Beyond that, we are still left speculating exactly when Microsoft will launch new products. More importantly, we do not know which devices will be launched.
Of course, there is plenty of insider information and speculation to chew through. For example, we know that no new Surface tablets or laptops will arrive this year. However, Microsoft is reportedly going to launch its much-rumored Surface all-in-one PC.
At the moment, Cardinal (PC codename) is expected to arrive in three screen sizes (21, 24, and 27 inches). However, we would say the 24-inch is unlikely, so expect just a 21-inch and 27-inch version. While we are dubious about the need of a Surface desktop, it is a logical hardware progression.
It makes sense that Microsoft will give the all-in-one a clear run without any other competing product launches.

Surface Pro 5 and Surface Book 2

That leaves Microsoft planning the Surface Pro 5 and Surface Book 2. This is where Pegatron’s involvement comes into play. The Chinese company has likely already started building those devices ahead of their launch next year.
Awards and accolades continue to arrive for Microsoft’s excellent hardware. In other words, the Pro 5 and Book have plenty of time before they need to be refreshed. We have reported before that Microsoft is waiting until the launch of Windows 10 Redstone 2 before launching the new hardware. That would mean a spring 2017 announcement.