Alleged sources close to Microsoft claim that the firm has demonstrated Halo 4 running on a Windows PC and phone devices today via a new cloud streaming service.
According to a report from The Verge, Microsoft held 'internal meetings' today in which it showed the 343 Industries shooter - currently only available for Xbox 360 - running on Windows-powered phone and PC devices as part of a demonstration of a new and as-yet unnamed 'prototype' cloud technology.
It is reported that Microsoft is working on the cloud streaming service to deliver high-end games to the family of Windows devices, including those on Windows 8 and Windows Phone operating systems.
If accurate, this new tech would be Microsoft's answer to Sony's Gaikai cloud service, planned for launch in 2014, which will instantly stream PlayStation games (PS3 and older) to a range of devices including PS4, PS3, Vita and the newly-announced Vita TV.
It could ultimately provide Microsoft with a solution to the lack of backwards compatibility in Xbox One, to which it could theoretically stream Xbox 360 games.
This could also serve as a glimmer of hope for PC gamers keen on Microsoft bringing Halo 4 to PC, as it did with earlier games in the Halo series.
The Xbox One release date has been confirmed as November 22 in 13 markets, including North America, UK and Australia.
The Xbox One price has been set at £430 / €500 / $500.