Well, much of it isn't a "rumor" anymore.
VMware has a free "tech preview" of Fusion running a VM on Apple Silicon, but it is only to run Linux and they have said that they will
absolutely not be supporting Windows:
communities.vmware.com
Parallels supports virtualizing Windows on Apple Silicon using Microsoft's "Windows 11 on ARM Insider Preview". The latter is not a full version of Windows, and it is unclear if Microsoft will continue to develop it or allow a license to Parallels to use it. For now, it seems, people using the Windows 11 on ARM insider Preview within Parallels are technically doing so illegally.
Download Parallels Desktop virtual machine to run Windows on Mac without rebooting or slowing down your Mac, plus get over 200,000 Windows apps.
www.parallels.com
Best way to run Windows on Mac - Parallels Product Blog - Run Windows, Linux, and more on your Mac. Helpful tips and tricks, Apple macOS and Mirosoft Windows news
www.parallels.com
Macs powered by Apple silicon do not support Windows and there is no Boot Camp feature like there is on Intel Macs, but support for Windows is a...
www.macrumors.com
VirtualBox has shown no movement towards being developed to run Windows on Apple Silicon.