Windows 8 RTM
Windows 8 has reached RTM status and will be available on Friday, 26th October 2012, with a final build number of 9200. Buy a Windows 7 PC from today and you can upgrade to Windows 8 Pro for S$17.99.
RTM
Released-to-manufacturing milestones for Windows and Windows Phone.
Windows Phone Mango RTM
Windows Phone Mango, also known as Windows Phone 7.5, has reached Released to Manufacturing, meaning we'll have it soon, likely around September or October 2011. The RTM build is 7720, and the Windows Phone development team officially signed off.
Windows 7 RTM
Per the Windows newsletter, Windows 7 has finally hit Release to Manufacturing and should reach shelves on 22nd October 2009. Microsoft is now packaging the code for PC makers and partners, marking the last milestone before the public launch.