Pen^2

Windows Vista == Windows 6.0
Window 7 == Windows 6.1

Ca veux a peu pret tout dire ( tout comme Windows 2000 => Windows 5.0, Windows XP => Windows 5.1)

D'ailleurs (^2) microsoft ne c'est jamais caché que Windows 7 etait le fruit du Mojave experiment: Windows Vista non brandé comme Windows Vista.

Speaking about Windows 7 on October 16, 2008, Microsoft CEO Steve Ballmer [...] indicating that Windows 7 would be a refined version of Windows Vista.

(cf https://en.wikipedia.org/wiki/Windows_7 )