After the announcement of Windows 8 RTM (released to manufacturing), we are glad to let you know that we are now ready with early access builds for developers.
If you are MSDN Subscriber, click here!
Not a Subscriber? You can buy one from http://aka.ms/DNBuy - prices start from RM2K/year.
If you are not an MSDN Subscriber and you're not keen to be one, you can go to Windows Dev Center download page to download a 90-day evaluation of the Windows 8 Enterprise edition for developers. Visual Studio Express 2012, Windows 8 design assets, code samples, and all the related tools and SDK’s you need to build apps also available from this download page too.
If you use the evaluation version, we recommend installing it on separate drive or partition or in a VM. This way you’ll be able to upgrade from your original OS to the Windows 8 RTM when it becomes available in October. If you don’t, then you’ll need to reinstall from scratch when you decide to move to the full version. Make sure you read all the details on the download page.