Libretro has announced that it has committed to releasing a port of RetroArch to the Xbox One in early 2019. The Xbox One platform has a built in Developer Mode that grants users the ability to develop and test software on the system. This should forgo having to jailbreak the console. According to the FAQ, users can switch between Developer Mode and Retail Mode. Access to Developer Mode costs $19. All Xbox One users should benefit from DX11, DX12 and FreeSync on the platform, but Xbox One X users will have access to a more powerful GPU than the standard Xbox One.
It’s not all perfect though. While Developer Mode won’t require you to jailbreak your console, you do have to pay at least $19 for a Microsoft Dev Center account. You will also have to factory reset your console if you ever want to get out of Developer Mode. And while it’s definitely an exciting development, libretro still recommends PCs with beefier CPUs and GPUs for the best emulation experience.
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Source: [H]ardOCP – The RetroArch Emulator Is in Development for the XBOX One