Techcrunch: Windows 8 Is Now Available For Developers (And For Everybody Else, There’s A 90-Day Free Trial, Too):
As expected, Microsoft today announced that Windows 8 is now available for download for its paying MSDN and TechNet Professional subscribers. The company, however, is also making a 90-day evaluation version available to all developers (or anybody else who wants to give the Windows 8 RTM a try) without the need to pay for a subscription. There are some caveats, though: this version will expire in 90 days and you won’t be able to upgrade to a non-evaluation version.