Downgrade rights were a non-factor with Windows 7, which customers generally applauded, but they were newsworthy after Windows Vista's launch in 2007, when many users, frustrated at that edition's problems, mutinied and dropped back to XP.
It's too early to say whether Windows 8 will trigger a Vista-like desire to downgrade, or if customers will take to Windows 8's massive user interface (UI) changes.
See more Computerworld Windows 8 launch coverage including news, reviews and blogs.
Gregg Keizer covers Microsoft, security issues, Apple, Web browsers and general technology breaking news for Computerworld. Follow Gregg on Twitter at @gkeizer, on Google+ or subscribe to Gregg's RSS feed. His email address is email@example.com.
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