Windows 7 officially launches tomorrow and many users are already enjoying the new OS through early upgrade programs and new systems that have been shipping with the OS installed. Those of us waiting for an upgrade have been able to pre-order Windows 7 for a while now on Amazon and other places.

The new OS has broken records for pre-order sales on Amazon according to the ecommerce giant. Amazon.co.uk has reported that the new OS sold more pre-order copies in the first 8 hours of availability than Vista was able to move in its entire pre-order period.

The OS even had more pre-order sales than the wildly popular Harry Potter and the Deathly Hallows book, which was the largest grossing pre-order title of all time for Amazon UK. To make things even better, the website reports that demand is still going for the new OS.