UTM SE can emulate a variety of desktop operating systems and system architectures, including MS-DOS, Windows XP, and (of course) many Linux distributions—all without workarounds, jailbreaks, or side-loading .ipa files through Xcode.
This really would not be news at all for ANY other platform, but for Apple it is a big deal when they release a single notch of control to users (remember the alternative EU App Store?).
This may not be very fast, and right now will probably be used mostly for retro games like Doom. It is because of how Apple allows something to run on its platform, and why it can’t run as a proper VM. Also, it’s called an emulator, not a virtual machine.
The QEMU-based UTM SE works with iPhones and iPads running iOS 14.0 or later. And no, it won’t be running Steam games.
See https://www.omgubuntu.co.uk/2024/07/utm-se-qemu-pc-emulator-apple-app-store