Forget foldable phones, and start picturing dual-screen Ultrabooks. You should expect this PC category to embrace dual screens in 2019 to keep 2-in-1s fresh.

Ever since the rise – and spectacular fall – of Windows 8, the 2-in-1 PC category (or "convertibles") has been on the increase. For a few years, there was some wild experimentation by manufacturers, with spinning displays (Lenovo ThinkPad Twist), or screens that rotated around in their frames (Dell XPS 12). But it was the Surface Pro form factor – perfected with Surface Pro 3 – that nailed the basics. In 2018, Microsoft does not even advertise the Surface Pro as a tablet. Instead, it's "the ultimate laptop with the versatility of a studio and tablet." The biggest change, though, is mindshare. Laptops that can turn into tablets for inking with ease are not only accepted, they make up the most interesting PC category around. Best VPN providers 2020: Learn about ExpressVPN, NordVPN & more But what comes next? Adding two displays may not be just for phones and pocketable devices. Here is why dual-screen laptops are likely on the horizon. 2-in-1s need to be revitalized

Arguably the most significant lesson Microsoft and its hardware partners learned since Windows Vista, and the decline of the PC, is stagnation equals death. Google is on the rise with its Chromebook vision. Apple is in the midst of transitioning its core base from macOS to iOS-type devices. The competition is fierce and shows no signs of slowing down. Microsoft is rightly concerned with losing ground to Google in education, and Apple is repositioning the iPad Pro as good enough with its new "What's a computer?" ad campaign. Surface-style laptops are more abundant than ever with the top three PC manufacturers – HP, Dell, and Lenovo – all releasing convertible PCs for consumers, enterprise, and education. This category will only grow stronger with the new Always Connected PC category

But will the "tablet PC with floppy keyboard" always be the dominant design? There is no need to throw our current convertible form factors for something new, but evolving the category is necessary to stay ahead. If digital inking, multitasking, and flexible form factors are driving forces for the 2-in-1 PC category, dual-display Ultrabooks begin to make sense. Yoga Book – Considering the future past

The Lenovo Yoga Book came out in October 2016. It's a device that was very much ahead of its time, which is what makes it so fascinating. Its Halo Keyboard only appears when the device is powered on, and it looks like something out of a Black Mirror episode (in fact, you can spot it in one episode of season four). The Yoga Book, though, is a flawed device. The Intel processor is merely OK. The typing experience is awkward. The display bezels are too large. But these are minor issues that – in theory – can be resolved through intelligent engineering. Adding a Qualcomm Snapdragon 845 processor could do wonders. As an example of how technology can solve these problems, consider the iPhone circa 2007. The phone famously rejected physical keyboards for a touch-typing experience, which many spurned. But technology prevailed, and touch-typing on phones is now the standard. The neat trick the Yoga Book did was switch the Halo Keyboard to an area for inking – something that Windows 10 is increasingly focusing on these days. The execution was far from perfect, but given time to germinate, the driving idea behind it is loaded with possibilities. The rise of dual-screen convertible PCs

While dual-screen laptops have always been a possibility, I think many factors make the concept ready for mainstream starting in 2019, including: Lower costs to manufacture.

Better optimized for battery consumption.

Thin touch digitizers.

Overall better quality control (no more dead pixels).

Windows Core OS and Composable Shell. Resolutions have jumped dramatically to 4K, AMOLED technology for laptops is now available, bezels are getting ultra-narrow, touch digitizers are super thin, and most importantly, prices have dropped because of mass production. But the real driving force may be Windows 10 itself. Microsoft is going full throttle with digital inking, which is becoming increasingly popular for students. Microsoft's composable shell, a.k.a., CShell combined with Windows Core OS is the next generation of Windows for the modern, mobile age. That Microsoft technology along with the Universal Windows Platform (UWP) is going to allow for dual-screen apps and device experiences, something we'll see first with Project Andromeda, likely later this year. But the idea behind Andromeda – a dual-screen device that folds – is not limited to just the pocketable form factor. The idea that Microsoft and its partners may be exploring how to adapt this form factor for Ultrabooks should be on your mind when considering the future of the PC.