Windows 8 Timeline

Windows 8 Developer Preview Annocuned

Sep 13, 2011

Windows 8 previewed on stage at Build 2011

Windows 8 Logo Revealed

Feb 17, 2012

Microsfot revealed new Windows 8 Logo

Windows 8 Consumer Preview Announced

Feb 29, 2012

Watch Widnows 8 Consumer Preview Keynote

Windows 8 Editions Announced

Apr 16, 2012

Windows 8 Editions Announced

Windows 8 Release Preview Released

Jun 2, 2012

Windows 8 Release Preview released

Microsfot Surface Annoucned

Jun 18, 2012

Microsoft Annoucned its own Windows 8 tablet named Surface

Windows 8 Upgrade Path Revealed

Jun 29, 2012

Microsoft revealed Windows 8 upgrade path

Windows 8 RTM Released

Aug 1, 2012

Windows 8 RTM Released

Microsoft Surface Released in Preorder

Oct 16, 2012

Microsoft Announces New Surface Details

Windows 8 Released

Oct 26, 2012

Windows 8 Officiall Released

Steven Sinofsky, the head of Windows 8, left Microsoft

Nov 12, 2012

Steven Sinofsky is gone

40 Million Windows 8 Copies Sold

Nov 27, 2012

40 million of Windows 8 Copies sold