Install Visual Studio UltimateDownload here: Windows Dev Center download page.

The word from Ian LeGrow on the product team:

Two weeks ago we announced that Windows 8 released to manufacturing (RTM). Since then we’ve been preparing builds for distribution as described in the Windows 8 has reached the RTM milestone post on Windows Team blog. I’m happy to let you know that we are now ready with early access builds for developers. In this post I’ll give you some pointers on the best way to get and install the RTM build and I’ll also point you to resources you can use to get your apps up and running on Windows 8 RTM.

Getting the RTM version

Depending on what Microsoft programs you or your organization might be part of, there are a few ways to get the RTM version of Windows 8. If you have an MSDN Subscription or a TechNet Professional Subscription, the RTM is available today. For info on other programs see the Windows 8 has reached the RTM milestone post on Windows Team blog.

If you are not part of one of these programs, don’t worry, we’re also offering a 90-day evaluation of the Windows 8 Enterprise edition for developers. This is available now from the Windows Dev Center download page along with Visual Studio Express 2012, Windows 8 design assets, code samples, and all the related tools and SDK’s you need to build apps.

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. […]

Windows 8 RTM is available for developers