It looks as like Microsoft has purchased and secured the rights to Xbox 8 domains. Microsoft have won two disputes filed in May with the National Arbitration Forum over domains owned by Chinese resident Chen Juan. As it stands right now, Microsoft is the owner of multiple domains:
There have been speculations that Microsoft purchased these domains in relation to the next-generation Xbox.
After all Microsoft have announced their new Windows 8 operating system, which is due to launch later this year.The next Xbox will reportedly use a form of Windows 8 to facilitate Microsoft’s multi-screen strategy.
However, Xbox 8 is only one of many speculated names for Microsoft’s next-generation Xbox, for there’s also the ‘Xbox Infinity’ which makes sense in a way when you turn the 8 on its side to form the infinity symbol.
Other rumoured next Xbox names include Xbox 720, Xbox Loop, and Project 10. It is code-named Durango.