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.
OS
Operating systems, mostly Windows 7 and 8 previews plus Chrome OS.
Microsoft Windows 8 Consumer Preview
The Microsoft Windows 8 Consumer Preview is out. Since the Developer Preview last September, which focused on the programming platform, Windows 8 has advanced on every front, from completing the touch, keyboard, and mouse experience to refining development and design.
Microsoft Previews Windows 8
At Computex in Taipei on 2nd June 2011, Microsoft gave hardware partners a technical preview of the next Windows, internally code-named Windows 8, to help them build devices that take advantage of its new user experience.
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.
Google Chrome OS
Google has announced Chrome OS, though it won't ship until the second half of next year. It looks set to challenge Microsoft's Windows 7 Starter Edition on netbooks. Chrome OS is an open-source, lightweight operating system aimed initially at netbooks.