Neowin posted a news story that references to the Xbox 360 has been found in the kernel of Windows 8

That previous rumor was not suggesting that you could place a game in the DVD drive and play but would have to re-download the game from Microsoft for a nominal monthly fee. This rumor was largely dismissed because the power needed to emulate the Xbox 360 could possibly be greater than what is available to the consumer at this time.

But, not wanting to let a rumor die off as being nothing more than speculative garbage, Win8Italia has found evidence within the Windows 8 Kernel to the Xbox 360. Specifically, they found the following strings, "XBOX_360_SYSTEM_CRASH" and "XBOX_360_SYSTEM_CRASH_RESERVED”. Does this mean that the previous rumor is true, while we don’t know that answer we can take a few educated guesses.

  References to the Xbox 360 found in the kernel of Windows 8