Pre-order page is now live on Amazon.com for discounted upgrades to Windows 7. Pre-order prices are valid from June 26 to July 11, 2009 in North America. The Ultimate edition of Windows 7 is not offered as a pre-order upgrade.

Home Premium upgrade can be pre-ordered for $49.99 while Professional upgrade can be pre-ordered for $99.99. UK pre-order is not yet available as of the moment. now available.

See the tables below for complete price details and features comparison for the various editions of Microsoft Windows 7. If you’re curious to know whether your desktop or laptop/notebook computer will be able to run Microsoft Windows 7 without breaking a sweat, be sure to check out the minimum system requirements.

Update: Didn’t realize that full versions were already also available for pre-order. No discounts on these though: