Microsoft has announced that they are going to make their new Vista OS available for download at the end of this month. They announced 3 new options available to customers - Windows Anytime Upgrade, Family Discounts and Online Marketplace claiming to give customers more flexibility when using the new operating system.

The Windows Anytime Upgrade will allow online operating system upgrades directly through Microsoft and authorized partners. Upgrades will start from $79.

Available initially in the US, Europe, Japan and Canada only, customers can order upgrades from http://www.windowsanytimeupgrade.com when the OS is released.

For those who are not familiar with the Microsoft Vista operating system and its offerings, it will be sold in 4 flavors as shown below:

Vista Edition Comparison [Microsoft]
Site [Microsoft Vista]