Just under a month ago, Microsoft made public its SKU (Stock Keeping Unit) strategy for Windows 7, while simultaneously delivering a sneak peek into the upgrade option details associated with the operating system. Although in a delicate and continually evolving market share ballet, both Windows XP with 63.76% and Windows Vista with 22.48% (according to Net Applications) are equivalent to nothing short of a fair game for Windows 7. More at; http://news.softpedia.com/news/Vista-SP1-to-Windows-7-Upgrade-XP-SP3-to-Windows-7-Upgrade-105693.shtml
