shawnz tips a blog post up at thebetaguy that details Windows 7's huge departure from the past, and the bold strategy Microsoft will be employing to maintain backward compatibility. Hint: Apple did it seven years back. There are interesting anti-trust implications too. "Windows 7 takes a different approach to the componentization and backwards compatibility issues; in short, it doesn't think about them at all. Windows 7 will be a from-the-ground-up packaging of the Windows codebase; partially source, but not binary compatible with previous versions of Windows."