Windows 10 2021 Fall release to introduce new UI
First up, the release cycle gets flipped as in 2021 the Fall release will be the more important one. The Spring 21H1 update will be a minor servicing update while the 21H2 Fall release will be "the big one". Microsoft's Chief Product Officer, Panos Panay, has promised big investment in Windows 10. This will come to fruition in the 21H2 update via a refreshed user face as well as new top-level features.
Windows 10 on ARM gets x86 64-bit emulation
Another big one is that Windows 10 on ARM will finally get x86 64-bit emulation. Apple has shown that ARM is a viable platform for computers with its M1 SoC, but it remains to be seen whether Windows 10 on ARM will ever become a success.
Windows 10 to get Android app support?
Rumors are flying around that Microsoft wants to add Android app support to the Microsoft Store. This feature may be released in 2021. At the moment, it's already possible to run Android apps on Windows via emulation tools like BlueStacks.
Windows 10X devices expected in first half of 2021
If you've never heard about Windows 10X before, this is a modern and lightweight version of Windows 10 without support for traditional Win32 applications. Windows 10X is intended for low-end PCs as well as flagship foldable PCs. After years of development, Windows 10X is expected to be finalized in December.
The first Windows 10X devices are reportedly slated for Spring 2021. This will include mid-range laptops and tablets, which will compete with Chromebooks. Window Central heard that a 2022 release of Windows 10X will add support for Win32 apps.
Microsoft's goal here is to go after Google's Chrome OS. Windows 10X will not be sold to consumers and will exclusively be available to OEMs. There are rumors that it will also run on ARM-based PCs.
Windows 10 in the cloud - possible solution for Windows app support on Apple's M1?
Last but not least, there are whispers about an upcoming cloud-based version of Windows 10. Microsoft calls this "Cloud PC", it will allow users to install apps in the cloud and stream them to any device.
Windows 10 in the cloud will reportedly be an integrated service that syncs with your Microsoft 365 subscription. Apps installed on Cloud PC will show up in the Start Menu as if they were installed natively.
If Microsoft is willing to roll out Cloud PC to the Mac, this could be a solution for some Apple enthusiasts that are on the fence about switching to Apple Silicon due to worries about not being able to dual-boot into Windows.