Xbox One is now listed on Amazon.co.uk, with the retailer posting a placeholder value of £599.99 on the console.
While there's still no official price for the console, £599.99 is likely wide of the mark, and customers are promised that: "you'll be charged the lowest price at release."
Incidentally, it's the exact same placeholder price that's been set for Sony's PS4, which is set to launch around the same time as Microsoft's recently announced console.