Neowin published a story that Microsoft is working on a x64 Intel app emulation for Windows on the ARM platform.

Microsoft is working to bring 64-bit Intel app emulation to Windows on ARM

Current Windows on ARM PCs can only run native ARM64 apps and emulated 32-bit Intel apps, but that's all going to change. Microsoft is working to bring 64-bit emulation to the platform.

With Microsoft's launch of the Surface Pro X last week, questions were once again raised about the apps that can run on it. The answer is that like any Windows 10 on ARM PC, it can run native ARM (ARM and ARM64) apps, and it can run emulated 32-bit Intel (x86) apps. This leaves out 64-bit Intel (AMD64, or x64) apps, so if you want an app that's only available in an x64 flavor, such as Adobe Premiere Pro or Photoshop Elements, you can't use it.

Microsoft is working to bring 64-bit Intel app emulation to Windows on ARM